I know the game is called Planet Coaster, but there is a serious lack of flat rides in my opinion. More thrill rides and kiddie rides would be nice. Even RollerCoaster Tycoon World delivered on the flat rides, needless to say, so did RCT3.
Another thing on my mind is the underwhelming Spooky Theme dlc. I expected more animatronics, gags, and scares. Hopefully they can add more in due time.
Over all, there's something off about this game. I guess I was expecting RCT3 but with freedom of ride and shop angle placement and better paths. I really wish you could manipulate the terrain the way you could in RCT3 using the grid and lowering a select amount of grid squares to your desired height. That really came in handy to make underground dark rides in RCT3.
Another thing is customizing your avatar. I wish there were more options.
Of course, I'm not too thrilled about the dlc... I mean having to pay for themes that were included in RCT3 right off the bat is pretty strange, and as I mentioned with the Spooky Theme dlc, I wasn't impressed for the $12 I spent on it.
I know people will say "Oh well, go play RCT3 since you think it's better", but that's not the point. There are some things about Planet Coaster that could be improved, and I'm hope they will be improved some time soon.