I want to start of by saying that im not trying to say you don't have valid points, not do i want to change your mind. I just want to try and understand why you think the system is worse then the RCT3 system.
I agree the RCT3 system has a more graphical approach, but why is it more easy to time that way? As my first idea is that RCT3 had a horizontal timeline on which you could place items, but PC basically has a vertical timeline as you see all the starting times from top to bottom. Because it's all numbers instead of dragging i would assume you can even time things more precisely because its all abselute numbers.
Once again, im not trying to belittle your problem, i just try to get my finger on what is bothering you about it.
I thik a nice trade-off would be to have both systems as an option. Me personally I love how accurate I can time things with this system, but for people that quickly want to set something up without doing a lot of renaming/organizing and pre-planning I can understand have a simple drag and drop interface on a timeline would be very intuitive.