While Miyamoto might of had a part in why Sticker Star was so bad (the simpler story was the least of that game's issues having broken game design ideas that contradicted each other), I feel that Miyamoto and Platinum did well by me with Star Fox.
Visually it might leave a bit to be desired at times, but they got the new designs and game feel/gameplay right. This is the first Star Fox game I wanted to 100%, it's really really good with a very high skill ceiling where I was learning new things even as I had 67/70 medals acquired. I hope Star Fox gets a bigger budget for the next game or at least allow it to live off as a portable+console NX title which should allow them to keep the budget down while making a fairly lengthy game.
I really liked the transformations in the game. It adds quite a bit especially during the first playthrough. The walker was really fun to play as and then transform to boost through a stage especially the training missions which are really fun to do. The walker seemed to have outlived its usefulness during high level play, but it allows you to Zelda Z-Target enemies making it face whatever you're fighting which is pretty excellent. Instead of doing a U-Turn just turn into the walker, ZR target, and then turn back. The walker leaves a bit to be desired with camera/3rd person controls but you get the hang of it.
Missions are a great addition to the franchise on top of just getting a high score. It's something that should really be added into more of Nintendo's games as an optional bonus. Captain Toad was the first, IIRC? Would work great in Mario. They're hard enough to make them feel compelling to collect despite there being so many of them. A bit of an issue would be that it doesn't tell you which ones you have already or what to do to get new ones, though.
Poured over 30 or so hours according to the Wii U's internal clock to get 100%. Haven't done arcade mode which I guess I can give a shot, but I feel like i got my money's worth. Don't know about Star Fox Guard, don't like Tower Defense games too much.
I'd echo what I said earlier, the poor critical reception dooming the game's sales is probably one of the biggest bummers of 2016 so far. It's been 10 years since the last game and I feel like this one was on the right track and that it's the best one in the franchise but it's going to sell poorly despite having a fairly good marketing push based on youtube ads popping up and Nintendo's push overall. I really dont' get how people can have so much trouble while I got it before I finished Corneria.