Toy Story Land will be ok, for now. It's about 10-15 years too late, but it'll be ok I guess. Pixar has grown so much and has so many more movies. Sure, Toy Story started it all, but it's not the be-all end-all.
If they had a Pixar Park/Land, you could go from Monstropolis to Metroville to Andy's room, etc.... The slinky coaster looks seems like a cop out. Like they had something else and this was the fallback ride and the other idea fell through.
For those I saw earlier saying about getting Buzz out of the MK, I agree. It's time to pull him from there and maybe even Woody and Jessie from Frontierland. The Space Ranger Spin could be better done as something else with newer movies out there, maybe some Guardians of the Galaxy-ish. I'm sure most of us wouldn't miss trying to find our "laser dot" that we're trying to shoot with, that is, if your laser gun even works!