khron: RTC1 is like distilled while RTC2 is somehow diluted...
I totally agree. I think RCT1 is one of my favorite games of all time but I can't say the same for RCT2. My issues with the sequel were the fact that basically everything that the sequel added was either not really necessary or far too cumbersome to use (scenario editor was a nightmare to use, stackable scenery was cumbersome and had issues with depth due to the game's 2D perspective, a huge amount of rides were just reskins to buff up the ride count, the way they rearranged the UI was terrible, etc.). Not to mention the fact that the scenarios the game came with were pretty sub-par and weren't fun to play on.
RCT1 had less in general, but what lacks in quantity in more than makes up in quantity. Far better scenarios, the rides that were there were good on their own, no cheap "reskin" rides, UI wasn't a jumbled mess, it was just overall better. RCT2 felt like they really didn't know what direction they wanted to take in and it became a classic case of feature creep.