Just as a thought, perhaps MSv and MRM could be tacked onto their current advanced traits in some form? Maybe as a second level of one and an entirely new advanced trait for another? Int(2) is huge, TH(2) is huge as well. Why not lots of hugeness?
Could MSv be made into an advanced trait that comes off Ironman (say Survivalist?) with the first level letting you heal up to 150% and second level to 200% by using medipacks? You'd still need BA to keep your life up there, but it allows many builds to have a go at survivalist, even across all classes. Would that be considered overpowered? Especially considering the current master-trait is considered underpowered?
MRM could simply be looked at as DM(2). More running time, but maybe cut the "no-loss-of-accuracy" bit. When running, HR(2) gives about a 50% dodge chance along with a free dodge from DM. But DM has always felt like the weak bit of that equation. Would DM(2) giving more running time bring it up to par with other advanced traits?
Whilst on this thought, perhaps shottyman could be made into a two parter as well? First level gives you 1-second-step-reloads, the second level gives you (movement speed)-step-reloads. Just as an option for those really quickly moving builds.
Berserker as a two parter? More chance of berserk from damage perhaps? Or increased attack speed? Perhaps just an extra 5 turns of berserking, both from the trait and from berserk packs? You could do a bit with this one.
Who knows. All these ideas sound a bit too good to me, as well as potentially abusable with class combo's and build ideas. It adds the option to add these "second level" advanced traits into the blocking lists if desired though. It also frees up a couple of master traits so they could be redesigned with extra cool-factor added in. But so very abuseable. It's an idea though......
A techhy with Survivalist might be a TINY bit too good. :)