Actually Kahuna, I like your idea. The reduced skill points per level makes a lot of sense, and trapfinding should be opened up. I mean, a ranger who can't find a falling log trap in the woods? Not much of a wilderness scout in my mind...
Bumping evasion, however, is one thing I don't know about. If you are using the alt for a Swashbuckler, than keep evasion where it is. The character will be jumping around in light armours (if any) and it just feels right to keep the whole "ha ha, you missed!" scenario in there. Besides, evasion doesn't just have to be spells, it can also affect things like the reflex save to dodge the chandalier that your nemesis cut loose to drop on you.
I'm not, however, suggesting that evasion should replace AC. Just that in certain situations where a reflex save is required than it can be used instead.