I would agree with you OP. My home park is also Kings Island. I know every path and shortcut on the back of my hand. I got a season pass for the first time since 2002 last year, and really did enjoy it. With rides such as Delirium, Backlot, Firehawk, and Diamondback I got to ride rides I've never seen before. I went about 20 times last year, and around August is when I was getting tired of going. I went back once for Halloween Haunt, and really enjoyed that as well, but other then that, I haven't been back since.
I probably won't go back until I see some improvement to their ride collection. I would like to see more B&M's and more Flats there.