There's simply not enough time in the match for that mech to legitimately maneuver around a deathball of mechs - especially when there's only 2 people on your team playing - and be able to rear core everyone. And with your ~400 hours a play time, I guarantee you aren't good enough at firing SRM6s to only drop rear CTs on moving targets.
#2 Original topic - the weight limits are to balance the matches of smaller groups against larger groups. Invite someone that wants to pilot and assault or build a full group. No one cares if you want to run all Locusts, but 99% of the players in this game don't want to and don't want to be completely gimped when your small team drops in vastly under-tonned. You have options to make this part possible, if you choose to take them. Someone in LFG will drop in an assault or heavy any time of day.
Edited by sycocys, 15 February 2016 - 03:34 PM.