You have some really interesting ideas, but I think it might be challenging for Bioware to implement all of those new features together.
The inertia on the ice would be interesting at first, but might get annoying after the first round.
The minefield sounds cool, could work well. Turrets could work if they had a really limited range, and were more of a side thing, not really a game-changer.
Also, that was very good considering English wasn't your first language.