While my build and gear is quite different from yours, I plan on dropping my OC and bringing in more meta magics. You're right in that the feat cost is NOT worth the small DPS gain... especially since I rarely find myself meleeing.
I do, however, want to debate with you the merits of going 10 Monk / 6 Ranger / 4 Pally with you.
By dropping 2 Monk, you lose:
- 5% Move Speed
- 3 AC
- Abundant Step
- 1 feat slot (Master of Forms)
- Natural Poison Immunity (which means pretty much nothing late game)
With 2 more Pally, you gain:
- Turn Undead, freeing a Twist
- Empower Heal option
- Disease immunity
- Fear Immunity
The loss of Master of Forms basically translates into the loss of Grandmaster of Forms... not a huge deal, though non-completionists can still get both easily. Really, the only big hit I see is Abundant Step. But losing that you gain more powerful heals, the ability to slot Pin/Flowers/Cocoon without losing DM, along with gaining some useful, if minor, immunities; making Epic Fort not as big a loss to get Blinding Speed or Epic Reflexes.