1) those mechs are typically the experiment part of the ranked games to avoid said copy and pasteFrom the limited time I played here there were a few instances of disgruntled players that didnt enjoy the game for this mech or that mech.
Thats fine and I hope it happens.
2) a different growing problem is that those on the losing side will look to blame mech/the setup instead of just take fault with their scumhunting process(i.e. ratchet's game).