Scrap ghost heat - it makes no sense and is completely baffling to new players
Implement weapon size classes - it has been done before with MW mercenaries and I think it makes a lot of sense and would give PGI great control over chassis balance and differentiation.
e.g.
Energy size classes:
Small - ML, MPL, SML
Medium - LL, LPL, ERLL
Large - PPC, ERPPC
Ballistic size classes:
Small - MG, AC2
Medium - AC5, UAC5
Large - Gauss, AC10, AC20
Missle size classes:
Small - SRM2, SRM4, SSRM2, LRM5
Medium - SRM6, LRM10
Large - LRM15, LRM20
Each weapon hardpoint on a mech gets a size class.
e.g.
CTPL-K2
2x Large Energy
2x Small Energy
2x Small Ballistic
AWS-8Q
3x Large Energy
4x Small Energy
JM6-DD
4x Medium Ballsitic
2x Small Ballistic
2x Small Energy
Implementing this system would put the 6x PPC stalker and 2x AC20 JM to bed as it would simply be impossible to fit. If you want double AC20s - bring a King Crab!
Anyway that's my helpful suggestion that will get buried in the MWO forums for all eternity
