Inpukeago, Delirium, zephyr, wind chaser, scrambler, troika, the barrels, and that thing in front of Adventure Express that I can't remember the name of.
Ah man you gotta get on Drop Tower! I used to be deathly afraid of Drop Towers. I would ride any coaster no question, but I would not want to do the Drop Towers. Well I went and rode Falcon's Flight at BGT and that scared the heck out of me so now I'm not afraid of them anymore lol. But seriously...you're missing out on Drop Tower. The first ride of the season on Drop Tower is always the best!!!
I haven't ridden Drop Tower because that's the one that's a bit too much for me. I also haven't ridden KI's WindSeeker, but I have ridden CP's....it was also a bit too high up and stomach-churning for my likes, so I won't be trying KI's anytime soon.
And in terms of past rides, I was never able to ride the OG Bat, Demon, Rotor, or Bavarian Beetle. Just a bit before my time (but I did ride King Cobra several times).
I doubt they'd bring back the water feature. It would probably require updates to the infrastructure (the water's been gone for 40 years), people don't have a history of treating stuff like that well, and I wonder if it would also cause the area to get a bit mosquito-y in the humid months. I also don't think we need to talk about changing the roller coaster's layout. It's not broke, doesn't need fixed.
But I like the idea of removing the TR:TR building to expand Rivertown. It definitely needs something fresh there; I feel like there's just one small stretch between the train station and the log ride that feels like RiverTown. A nice restaurant out there (BBQ would make sense, but Coney Mall has one) perhaps with outdoor seating and entertainment, would work.