well, i just dowloaded the rct3 demo and played for a bit... here are some observations i made:
1. looks good, maybe a bit cartoony
2. coastercam is cool
3. lots of new elements for coasters like overbanked turns etc...
4. why did they go and make the interface so damn crap? in my first time playing RCT1, i could easy put together a coaster in like 5 mins (even though it sucked). It took me like 5 mins to build the lift hill and the first drop
5. damn that interface is terrible! why would they change it?
6. building scenery is much harder it seems...
7. why do i have to delete every tree in my way?
anyhoo, i do like the potential for making really good coasters in rct3, but after playing for a while is the interface still kinda hard to use or do you get used to it?