UngeheuerLich
Legend
Interesting. For me maxing an ability score has a mildly displeasing side effect, specially when this ability is strength. I am not sure if the game was intended to link directly the physical attributes with the overall character looks, but I can't help imagining every 20 str hero as a hulking pile of muscles. And while it doesn't bother me when every high level barbarian looks just like this, it has a detrimental effect for me when all str-based fighters and paladins also look this way. The way I project the image of the arquetypal fighting hero is something more balanced, with strength and grace complementing each other. And while the game does not really offer many tools for such, I was toying with the idea of creating a feat, or set of feats, to allow for a combination of str and dex for physical (melee and ranged) attack and damage rolls, obviously capping the bonus to +5, so not to incur in any bloat.
I think diverse builds could need some help. +1 int and cha doesn't cut it for fighters. I would at least allow skill training for fighters that want more roleplay opportunities.
A mix of dex and str is also a good idea. It is however quite difficult to make that balanced for a variant human that starts with 16 dex and str. Maybe make str bonus +1/2 dex bonus rounded down to a maximum of +5. A human variant would begin with +4 if he took the feat... but I would not worry too much about that.