Now that this thread has, mostly, been resolved, I feel obligated to hijack it!
Ever since I read on Page 140 in the 3.5 Player's Handbook that Combat Expertise and Fighting Defensively stacked, I've been confused. How is it that you can be better defended in combat by making attacks, than spending an action on Full Defense? With the tumble bonus, you can get +8 to AC while using Combat Expertise and Fighting Defensively, but you can only get a +6 when using Full Defense?! Guess they need to rename it Not-So-Full Defense, huh?
In my current game, the GM has stated that, as a Full Round Action, if you have Combat Expertise, you can use the Total Defense action, which stacks the +5 from Combat Expertise and the +4/+6 from Full Defense, allowing you to add +9/+11 to your AC, at the cost of only being able to take a 5 ft. step that round. It's come up, and been very useful in a few situations.
We're also wondering if allowing a Shield user with Combat Expertise to get a 2 for 1 deal (like Power Attack and 2 Handed Weapons) would be terribly unbalancing. -1 to hit for +2 to AC if you have a Light, Heavy or Tower Shield, capped at -5 +10. Is that broken?
- Kemrain the Not-So-Fully Defended.