Nothing related to PM is shown: I've seen a ton of people assume Project M shut down because Nintendo has been working on things the PMDT had been working on as well (such as Isaac). I doubt we'll see Isaac, Sami, Knuckles or any of the stages the put back in.
Roster organized: more of a hope than anything else, but if it's really the final DLC I hope they'll tidy things up a bit.
Less than 30 minutes: No explanation necessary.
Gold version with all DLC: if it is indeed the final DLC, I wouldn't be surprised if they'd launch a version where all DLC is preinstalled against a discounted price.
Two more after Cloud: some people say they expect Smash DLC to go out with a bang and expect a ton of characters. I'm gonna go safe with the datamined amount.
Wolf returns: due to fan demand.
Smashboards and official website melt: to b fair, this could have been the free space.
Cl-out now: Cloud up for download right after the Direct.
A new stage (not Midgar): as an addendum: unrelated to new third party characters. So far, we've only seen Miiverse and Super Mario Maker as new stages that aren't connected to new third parties. I assume we'll see one more.
No first party newcomers: I think I recall Sakurai saying something about scraping the bottom of the barrel when it comes to first parties. Based on this, I think we'll only see third parties that get a ton more hype
Yet another Photo contest: Smash has been doing this a lot, putting out photo contests to, somewhat artificially, keep people posting about Smash.
More FF7 Mii costumes: it's Smash x FF7. There's no chance it'll just be Cloud & Chocobo.
Free space: -
This is it, no more DLC: more or less assumed because of the way they have announced this direct, but I think they'll outright say it's the final bit of DLC.
Directly to you: some kind of final nod to Iwata.
Another 64 stage: most of the returning stages have been from 64. I'm guessing Yoshi 64 will get announced.
Only 1 ballot 'winner': I'm thinking they'll only reference the ballot when talking about one character.
For Glory with friends: currently, you can only Team Battle with stranges. How cool would it be to go online with ya buddies?
Fan favorite confirmed as Mii costume: I'm looking at Isaac, mostly.
A new game mode: no clue what it could be, perhaps one of the modes that has been scrapped since Brawl or Melee.
New amiibo release dates: new characters = new amiibo, new dates to announce. I'm sure they'll be a bit about amiibo.
Sakurai appears: according to my brother, this is obvious, but in the Direct with Xander (50 fact extravaganza) he didn't appear, IIRC.
More stages get crossed over: like Duck Hunt, I think we'll see more versions transfer versions. I'm holding out for Brawl Yoshi's.
Another third party: I pretty much explained this one before.
More 8-player Smash stages: recently, a video popped up where some stages were hacked to play with 8 players. While most stages reused spawn points, there were a few (like Pirate Ship), that had 8 different spawn points. I wouldn't be surprised to see more stages added.