Just nerf the SM's quit match button. Make them actually play, practice, and learn. That'll help a ton.
How about we give the LSM a Tutorial? Seriously though, I reckon they will just get more OP weapons like the Vengeance Storm Bolter...
I would maybe believe you guys if I didn't consistently destroy all opposition when I play. That's how I know your "LSM are just all bad players" excuse is bullcrap. Me still;
As someone else said LSM is Jack of all trades master of (almost) none. The fullest choice with few or no optimal ones for a given role. I'll agree sometimes LSM bad play is at fault, but it's not the whole picture. To suggest otherwise is Here... ***cough***... untrue.
In this thread we see how truly nasty and spiteful the Eldar get whenever SM buffs are considered. For everyone who is a lurker on this forum, I hope those posts give you a clear example of what you should not post in order to be a decent community member.