How about a completely separate practice area?

Was just thinking, is there any chance we could get a completely separate practice area? My idea for this is that in this area, you don't win any rewards (not even 20 ISO), but any damage you take doesn't stay with you after a match. In this area, you can choose your opponents (perhaps from a list of enemies), but more importantly, you can choose any characters for your team, including those you don't actually have in your roster. This would be a perfect way for players to try out new combinations of characters, and perhaps see which ones are worth leveling up. All characters could be at a base level of some kind (say, 3/3/3 in powers, and level 50), so you'd get a good idea how they would play if you were to get them and use them.

I think this could be a really good area for players to use, and would likely encourage some sensible spending by people as well. I know for myself, I'm currently sat on 35k ISO and 5.5k HP, with no idea who to upgrade, and a fear of upgrading the wrong character and effectively wasting that currency. If I could go into a practice area and test a few different characters out, I would know which ones suit my play style best, and which would be most worth upgrading. It would also allow us to play with new characters as they're released, and if they're good characters, it will likely encourage us to either push really hard in tournaments for them, or to just spend HP on them.