I tend to feel pretty indifferent about Mojo's. Indifferent about froyo? Yeah, as shocking as that seems, it can happen. It is not exactly up to the level of crave-able but not bad enough that it wouldn't do in a pinch.
The topping bar is mostly fresh-ish... I say "ish" because I usually end up passing on the fruit due to them looking less replenished and a bit picked over - where the mushy pieces are the last left and newly diced fruit needs to be added.
Mojo's seems to have less flavors to choose from than most other places but I can always find at least one to enjoy out of the bunch. Also, they seem to be a bit more on the tarter side than other frozen yogurt places. This is no problem for me, as I enjoy life on the tangy side, but some of my fro-yoing companions aren't always into that sort of thing.
Lastly, the employees are often in the back and not on the sales floor. Not a huge issue but it would be nice if they were around in case anyone has questions (that happens) or would like to check out (also happens). But maybe they are just working on slicing up some fresh fruit ::fingers crossed:: #dreams
All in all, just middle of the road but sometimes that will do. That'll do, pig. That'll do...
Because you are at Tempe Marketplace and you really could go for some frozen yogurt.