I had an idea about how to show the mine is stabalized again, back in the day they used wooden structures to help the mine hold it's shape, maybe you could animate a miner putting up some kind of beam in that cave in the background to show the mine has been fixed up. or have some miners in the same cave constantly working, they run when the cave is about to collapse. so if they aren't there you know to let up a little bit it would also give that background structure an actual purpose rather than asthetic. just a suggestion, keep doing what you're doing dude :)
AA vehicles and weapons. Half the time all it takes is one guy to get into a helicopter, Shoot the others down so that they wont respawn for a while and the other team is totally screwed.
i absolutely love Tesla coils . the look frickin epic, the history is extraordinarily interesting and burning people to a crisp with them is awesome. Epic game dude keep on keeping on.