I'm still in Disneyland and haven't ridden everything yet, but I thought I'd share a few of my observations:
Space Mountain
Holy cow! I don't even know why they call this the same ride. I can kind of get behind the nostalgia of the original, but honestly I feel like this one is just plain superior. I was prepared for it to be different, but not this different.
Size Issues
I don't know if it's because everyone was telling me how small DL is or what, but I really didn't notice that it was that small compared to the MK. The castle on the other hand...
Cast Members
I had heard that the CMs here were typically more friendly because minimum wage here is higher. I find this to be somewhat true, but I also see a lot of people who are just working at DL until their acting career gets started (any day now). I think it's pretty much like WDW, a mixed bag.
Food
The table service I think has been generally comparable, but the counter service seems like it has been superior here. It may just be because of the choices we've made though.
Convenience
While the parks themselves don't seem small to me, things are much closer together. It's honestly been really nice to be able to get in and out of the parks so quickly.
Those are just some things that have popped into my head...I'll try to put up some pictures and reports soon.