New mech idea
A bit out there and possibly op but how about a mech 32 energy max that has a base speed of 10 but any energy it doesn't use on loadout adds to its speed? Ie if it was maxed and you had 2 x 12 DL then it's speed would be 10 plus the spare 8 unused energy so 18 but if you wanted to just use 2 x 4shotgun its speed would be 34 base. 10 plus the unused 24 energy in loadout.