The magicband unavailability is on the top of my list.
When I learned what it was, I tried to order one from the Disney Store.
But the store refused to ship it to me for some reason, so I could not get one.
From what I understand, you need one personally, you can't get someone to do it for you by proxy.
Toy Box Speedway unlocks is the one that irked me the most.
I eventually managed to get most of them unlocked, but given my lack of skill at racing, it was not easy.
The next item is the limited nature of objects for Toy Box.
I was working on a Sugar Rush racetrack map (authentic to the movie) and ran into a massive problem when I tried to sculpt the cake rising spiral mountain.
It was simply impossible to get the right shape!
You see this object in the Toy Box Speedway by the way, although I am uncertain if can be driven on.
The Gumball canyon I have driven through, but I am uncertain if that can be replicated in the Toy Box.
An issue I expect that will not be resolved is the lack of diversity in characters.
There are so many Marvel and Disney characters to create, but we only get a fraction of that number.
I think they need to start making characters from the comics instead of just taking them from the shows or movies.
Sadly, because there is a legal dispute about licensing X-Men characters, I don't think we will see mutant characters in Disney Infinity at all.
A shame, because I wanted those figures!
But we can't hold DI responsible for that, it's a movie production company being a pain in the neck.