A few things.

The dex for attack and damage only takes effect if your dex bonus is higher than your str bonus. Your strength based half orc (and mine) can keep on keeping on.

The bonus to trip attack applies to both str based trip and improved trip and also to dex based sweeping strikes. I wish sweeping strikes, trip, and improved trip would use whichever mod was higher, but as it you have both str and dex based trip options. I still like sweeping strikes on my half orc because I can cleave, g. cleave, whirlwind, and sweeping strikes... any trips, which are admittedly rare, are just bonus.

The beauty of the new enhancements are the flexibility. Some of that means hard choices, otherwise there would indeed be one build to rule them all.