Well, I've only glanced through it, but my initial thoughts...
Those big conversion kits that have two of everything aren't a good idea. I have 4 X-Wings and no K-Wings. Do they expect me to pay $100 to get enough stuff to convert those 4 X-Wings, and be left over with a bunch of crap I can't use? If they're smart, they'll sell the conversion kits individually.
I like the idea of "refining" each faction to fly/handle differently, but it's going to be a pain (and possibly a lot of expense) to convert all the starfighters I have to be useable in 2nd Edition. And I don't know if I play the game enough to bother with it.
Ah well...I'm sure I can find opponents to play first edition...