I've sung this one before, but I'll try again:
Most of this game's house rules are good, but the rank advantages are bad, and might is the worst, by which I mean the most powerful. (With a possible exception for the ability to test down Ag, not sure, depends on circumstances, etc.) This game already has rank advantages by way of tiered gifts and trait maximums, and the might/test down rules add more chops to already-chop-heavy combat.
If you want rank advantages, I heartily suggest taking the harder-to-frenzy rules from tabletop and retrofitting them for MET. (A free retest to resist Rage-induced frenzy for all athro and above would not be a bad thing. Giving Adren a bonus trait or two in lieu of that retest might not be a bad idea either.)
tl;dr: blah blah blah I'm Conor I think about mechanics a lot and think you should listen to me blah blah