You guys don't get the issue here:
Restaurants, Vista Points, Hotels, Security, Fireworks were all stuff that got added later in PC1. There are two reasons: release pressure (development time), Frontier isn't a company, that thinks like "ok, we develop a game for 6 years and then it is done. They are more in the way, we develop for 2 years and support for 4 years a game with updates, cause it is more cost efficient".
The second is design space: First you don't want to have to many interlaying systems at once, cause if one breaks, your whole game gets dragged down. For example the queue bug: Not only didn't people queue, the paths were overcrowded, Staff got stucked, the ride pricing wasn't fully on point, etc. If you now add restaurants, vista points, security to the mix, you are just creating more problems.
Additionally if you copy a system 1:1 you really make it hard(er) on yourself to improve those systems further, especially if it were a closed system. And some systems were just bad designed.
Vista Points: Wouldn't it be better if people watching scenery naturally? instead to give them a forced point where they should gather round. Even in RCT2 you had a system where people were just watching rides, without vista points. If you watch PC2 closely you see people are more appreciative for scenery not just there thoughts but also their body language, they are looking at your park. So maybe this is something that should improved on .
Restaurants/Hotels: The reason i didn't like restaurants/hotels was simple, it was a horrible system: One point of the game is watching your guests, see how they behave. The old system, was simply people vanishing in cubes, there was not interaction, no nothing. Especially for Restaurants, it always felt better to place food stalls in a bulding and flesh out the building with scenery and picnic tables. I could see people eat, interact and so on. So if i have a system, where i could place Restaurant specific scenery and maybe even hire waiter and so on, this would feel far better than the people go into cube system. Same goes for hotels.
Security: For me, i never felt 'i was winning' at security, you could hire guards, place cctv, but this was it. Here was a lot of room of improvement and was more a loved relic from the RCT series, which never got revised for new times. So designing a system where the player has fun to interact with, should be way cooler than the old system. Not to a level of 'ghostbuster' but all in all i felt that the 'ghostbuster' design system was a better security system than the, i hire two guards system.
I am not against innovation, quite the opposite, but i also know it is not fair to compare PC1 (in the actual fully polished state) to PC2.