hard or extra hard will make things slightly better for sure, 1 shot heroes was kinda insane! especially wolvie. magneto 3-ball would be a good call as well. loving the added show before multiball!
feel like the game is right on the cusp of greatness, tweaks,tweaks,tweaks. stacking heroes is cool, making them easier is not cool.
someone mentioned having trouble with telling when they have started/completed heroes. at least the first time around flashing=started while solidly lit heroes=finished
second time around all will be flashing (if you completed NONE) so dmd will inform as to when each hero is started again. yeah theres alot going on but look at spiderman, who the hell knows whats going on on the dmd, you just gotta keep stuff as straight as you can in your head or figure out inserts. this is the kind of thing that comes with stacking, lost dmd animations,fx and the like. by increasing the shots per hero (hard/extra hard in settings), generally less heroes will be stacked at once unless someone is either planning it out or super lucky. so that could solve "overstacking issues"
villians are great and improved, especially the hellfire and brotherhood targets A+. maybe put an option when villian is lit at the blackbird scoop to instead collect 500,000 points or a mystery award (fingers crossed for nightcrawler) instead or something paltry, so if someone wants to ignore villians instead of timing out they can and they can continue their feverish pursuit of hero wiz modes.
do something with nightcrawler, the poor guy is never going to see the light of day, maybe make it so if you complete his mode he gets(teleports) another x-men you haven't collected yet. mystery award seems like a good way to start nightcrawler or perhaps if you only have one hero left to collect nightcrawler saves the day for you...
x-men as-is, is a pretty good game, i feel like its so close but it could use some love. don't let this awesome art and pf design be squandered by less than stellar code.