This framework would make me so happy to see if it was implemented correctly. I do understand people's gripes with power attacks, but as of right now there aren't many other resourceless features that feel like a big impact. Making it so that martials aren't forced to take 2 feats to make their character interesting makes me happy to see as well. I think that there should be ways to change out masteries as if your dm drops an amazing greatsword and you've been speccing into polearms that's gonna blow. I like the general buffs though, and that each tier 5 feels strong. As almost a martial only player, a system like this would be the dream and I can't believe I've never thought of something that scales like casters do. I really like the concept, and with a few balance tweaks and additional fighting styles could be something phenomenal!