Just a little thought I had. The superhero costume in the 'secret' shop looks great (well the Wonder Woman one does, I don't know what the male version looks like) but something that's holding me back from really considering buying it is that ultimately it's just a bunch of items, same as any other I'd find in the game, and they get replaced by ones with better stats constantly. I feel like if I bought Diana's sexy little ensemble, within a week it'd be in the storage tab never to be worn again. Granted I could whipstitch newer/higher-stat items to look like WW, but with bustier, belt and boots (I like my pink hair) that's 60 diamonds, and given how stats will always improve it's going to be like 60 diamonds per week, every week. On top of the purchase price of the costume (works out to be the equivalent of buying something like 2500 diamonds), that gives me a big 'not worth it' feel.
So what I thought is this. In the 'your style' screen, have a separate menu for costumes bought from Wanda (I figure there's going to be more than one eventually?), which lets them override what you're actually wearing. So in, say, footwear, you select your Superhero boots from the various Wanda footwear you've bought (like how you choose which kind of underwear you're wearing) and tick 'always wear', and no matter what shoes you're actually wearing, your character looks like she's wearing WW's boots. Like how you can have items invisible currently. This would only be for Wanda items of course.
Now yeah that'd mean nobody would ever have to whipstitch to keep their costume on, so that's some diamonds not being spent. But right now I'm not spending those diamonds anyway and I'm not spending money on the costume because it's just going to end up in storage never being seen. There must be a few people feeling the same, I'd imagine. If I had an 'always wear' option like this... it's still a lot of money, but I'd be seriously thinking about it.