1 It would be good if there were team battles!
2 A tv show would be nice, to watch real battles on tv!
3 It would be great to be able to redo singleplayer levels without any extra credits paid to you for winning!
4 It would also be kind of super mechs to add an app

Some great ideas, not sure if SM is equipped for implementing 1,3, and 4 though.

the 4th is in to-do list of developers, so eventually, an app for smart phones will come up.
the 3rd is possible, but the player also shouldn't get any xp to make it fair. Please create a sggestion topic for that alone and let us vote.
It's not quite the time for 2nd to happen, as the game is still in beta and there isn't a lot of people playing it, at least not as much as the devs want it to have right now. And creating a tv show about a game that doesn't have many players isn't such a good idea.
and the 1st idea, I like that, and there are pros and cons about it(I'll mention about those in it's topic if you create it) please create a topic for that as well.(Again with a poll so we can vote)