Hmmm, quite interesting, initial thoughts:
Improved sealing definitely the best improvement
+2MP gets, albeit expected,
Live View - might use in 2-3% shots, so not so useful
sRAW - I'd go to JPEG first
Dust Removal - just something to go wrong/break.
ISO display in window? Doesn't say
+2/-2 EV - why not +3/-3 as I use now (guess I'd just take more shots in manual)?
So, advantages to me over 30D: better sealing and +2MP
I'll stick to plan of getting a 30D unless I find a 40D at a good price