No, I pretty much agree with you. I replayed ME1 to death, trying the different classes, with new faces and all that. Whilst in ME2 the universal cooldown made every "non-combat" oriented class play in a similar manner. Which killed the immersion for me at least, add to that the lack of exploration.
I was actually just the opposite. I've played ME2 to death, ME1 I actually stopped playing for a while and couldn't figure out where to go when I got back to it, so scratch that one, started over, lost interest, then got back to it...only finished ME1 three times which is actually not that many in relation to ME2 (believe it or not).
I had 7 completed character saves for ME1, and I have problems replaying ME2. Just because it feels a little too much of the same experience, combat has been improved but it still doesn't feel quite like either a shooter or a RPG. There really aren't many options in combat other than the" wack a mole style" of play. It probably goes back to my issue with the universal cooldown and the "dumbed" down character progression. When it comes to it; aside from soldiers, all other classes are vulnerable and little more than bullet fodder.