Being someone who didn't own a Wii U, I only ever considered getting one because of Smash 4 , BotW, and a few other titles that looked like fun to me. BotW is coming to the Switch and a Smash 4 port is likely, so that is even less reason for me to get a Wii U at this point. Any Mario games other than SMM looked so bland to me. Nintendo charged $60 for Wind Waker with a bloom effect and a slightly better looking Twilight Princess that somehow runs worse than the GC and Wii version from what I've heard. I was hoping SFZ would be good, but that pretty much ended up being ANOTHER SF64 remake with horrible controls. Xenoblade Chronicles X looked like it was going to be great, but I never heard ANYONE talk about the game after it came out despite it's hype from a lot of Nintendo fans, so it just makes me think that game was probably forgettable. Splatoon never looked that interesting to me and Splatoon 2 still doesn't make me want to care about the series, but that's just me. Smash 4 is a great game, but the step from Brawl to Smash 4 was no where near as big as the step between all the previous games other than 8 player smash on the Wii U version and being portable on 3DS (Which probably only existed because of the Wii U's poor sales in comparison to the far more successful 3DS). In hindsight even a lot of the Wii U games that get a lot of praise either lack something to make them really memorable, or just were not a big enough step ahead from previous games in their series.
This is one is probably going to be REALLY unpopular, but I honestly find Smash 4 harder to take seriously as a fighting game after not playing it for a long time and playing some other fighting games during that time. I still can take it seriously, but I can't help but be a little bothered by the fact that the Smash games are the only fighting games where you can get punished even though you actually landed a hit on the opponent, and how over tuned (NOT OVERPOWERED) some of the DLC characters are. Just imagine any low or mid tier character if they were DLC, and how much better they would be just because they are DLC.