With the roulette wheel trick gone, we've lost a great deal of control over how we farm collectibles such as trophies and custom moves. However, the Wii U version has even more methods than the 3DS version where you can farm collectibles. I'll be updating this with some of my own results with each method, and I'd like to have a lot of people also submitting their data for these modes.
Without further ado, here are the methods:
CRAZY ORDERS
By far the best way to unlock anything (it's the best way to unlock CDs bar none, and it cannot be beaten at all in terms of quantity when you get good at it). The 10 minute limit is way more than you think, and you're able to consistently get at least 10 rounds in about 5 minutes. Within those 10 rounds, you can expect to get, on average, 20 collectibles. Losing is minimal, though I haven't calculated how much of your loot you lose when you die. By far the best attribute of this mode for collectible farming is the hints the game gives you when selecting the ticket, so you can determine if the ticket is worth going for (this is especially valuable if you're going for CDs)
Trophy Rush
I'd only bother with this one if you're going for trophies (you can get about 25 without much work in two and a half minutes), but in terms of collecting custom moves, it's not worth it unless you're really good at it. I've heard reports of people getting 6 customs per run, which would make this worthwhile, but most of the time I've seen people get around 3 parts.
Master Orders
For being fundamentally similar to Crazy Orders, you'd think that it'd be worthwhile for farming. However, the biggest difference between them is the increasing difficulty from Crazy Orders, which isn't present with Master Orders. The increasing difficulty is what results in Crazy Orders giving so many collectibles over time. In addition, you consistently have to deal with the modifications that aren't present in Crazy Orders (such as you being tiny, or your opponents being metal etc. I do need to see if there is a correlation between the difficulty of the ticket and the reward.
Classic Mode
While it performs much different from the 3DS version, it's the same in practice. However, while the roulette rigging is gone, you now are able to challenge fighters that guarantee a custom part or trophy (evident by the red wrench or green trophy on the fighter's trophy). In addition, intruders can enter and they will also possess a wrench or trophy icon (and from what I've seen, they don't replace another fighter with a custom part or trophy). Master Core appears on 5.5 or higher and cannot be skipped. Master Fortress appears on 8.0 or higher and is a genuine pain in the rear. Due to both of these, I'm not sure how useful Classic Mode is at 5.5 intensity or higher as the Master Core/Fortress are very time consuming fights. It's also worth noting that the quantity of your loot increases with intensity.
Beyond these four modes, I think that's it. You're able to get some trophies, CDs and moves through Challenges but those are all pre-determined. VS Mode drops them too but they are rather rare. Events will also unlock trophies. I'm not sure if Smash Tour farms customs and I don't want to experiment with it as the mode is honestly one of my least favorite things in video games from my recent memory.
tl;dr version: Crazy Orders is by far the most optimum way to farm collectibles, with the exception of Trophy Rush for trophies. Use Master Orders and Classic Mode to buff your coin count and to collect Crazy Order Passes to keep playing in the mode.
Without further ado, here are the methods:
CRAZY ORDERS
By far the best way to unlock anything (it's the best way to unlock CDs bar none, and it cannot be beaten at all in terms of quantity when you get good at it). The 10 minute limit is way more than you think, and you're able to consistently get at least 10 rounds in about 5 minutes. Within those 10 rounds, you can expect to get, on average, 20 collectibles. Losing is minimal, though I haven't calculated how much of your loot you lose when you die. By far the best attribute of this mode for collectible farming is the hints the game gives you when selecting the ticket, so you can determine if the ticket is worth going for (this is especially valuable if you're going for CDs)
Trophy Rush
I'd only bother with this one if you're going for trophies (you can get about 25 without much work in two and a half minutes), but in terms of collecting custom moves, it's not worth it unless you're really good at it. I've heard reports of people getting 6 customs per run, which would make this worthwhile, but most of the time I've seen people get around 3 parts.
Master Orders
For being fundamentally similar to Crazy Orders, you'd think that it'd be worthwhile for farming. However, the biggest difference between them is the increasing difficulty from Crazy Orders, which isn't present with Master Orders. The increasing difficulty is what results in Crazy Orders giving so many collectibles over time. In addition, you consistently have to deal with the modifications that aren't present in Crazy Orders (such as you being tiny, or your opponents being metal etc. I do need to see if there is a correlation between the difficulty of the ticket and the reward.
Classic Mode
While it performs much different from the 3DS version, it's the same in practice. However, while the roulette rigging is gone, you now are able to challenge fighters that guarantee a custom part or trophy (evident by the red wrench or green trophy on the fighter's trophy). In addition, intruders can enter and they will also possess a wrench or trophy icon (and from what I've seen, they don't replace another fighter with a custom part or trophy). Master Core appears on 5.5 or higher and cannot be skipped. Master Fortress appears on 8.0 or higher and is a genuine pain in the rear. Due to both of these, I'm not sure how useful Classic Mode is at 5.5 intensity or higher as the Master Core/Fortress are very time consuming fights. It's also worth noting that the quantity of your loot increases with intensity.
Beyond these four modes, I think that's it. You're able to get some trophies, CDs and moves through Challenges but those are all pre-determined. VS Mode drops them too but they are rather rare. Events will also unlock trophies. I'm not sure if Smash Tour farms customs and I don't want to experiment with it as the mode is honestly one of my least favorite things in video games from my recent memory.
tl;dr version: Crazy Orders is by far the most optimum way to farm collectibles, with the exception of Trophy Rush for trophies. Use Master Orders and Classic Mode to buff your coin count and to collect Crazy Order Passes to keep playing in the mode.