I was kind of against it when I first saw the name!
I remember being excited for RCTW and seeing on their fb page a comment saying "Frontier are making their own game too" and wasn't really onboard after I had seen the first trailer, the trailer at first, when those pieces of path come down looked very RCT1'ish, and I didn't like the look of the characters, at the time I was saying they're very "RCT3.5" because of their dotted eyes.
Some months passed and I noticed RCTW were not doing so great, their trailer looked pretty terrible, and they started showing off some new screens and I was still on board with them, after their odd streams where the diving coaster went up around a turning that had no lift hill, I started to lose hope with it, RCTW posted some more stuff, showing off the twister and the "pendulum" and I noticed that the ride physics were pretty terrible, but thought that RCTW had the better coaster builder, because in the first few dev diaries of Planet Coaster, the track pieces seemed to be pretty short (still am hoping they'll have a longer option)
I think it was the "Interior" designer when I became more of a fan, because I started to notice how much character the guests had, all the builing pieces, the way buildings and "facilities" worked, and gave up on RCTW after seeing that the game had a terrible build, bugs, bad animations, and unnecessary large rides (like that topspin of theirs, why does it take up that much space?) the first Planet Coaster Live Stream had me on board, they mentioned the coaster was a bit wavey and the builder was unfinished, and then on the 2nd live stream we saw that you can "tweak" parts and it had a smoothing option, the smoothing option turned me completely, as I had seen a few videos and saw that coasters weren't very smooth, and now, I'm a fan and looking forward to the full coaster builder.
I've lost faith in RCTW now, seeing as Planet Coaster seem to be doing everything right, and the amazing videos we've seen has proven what this game can do, I am hoping we'll see block breaks and multiple trains eventually, and multiple stations, I actually saw in a few images today when I was looking for something to use as a desktop background, concept art of the "operater shack / shed" for the mini ferris wheel, and also in concept art where a coaster's station had gates, kind of hoping that the cat walks will be changed to steps soon, though I'm not against this ramp type catwalk.
This game is the real successor to RCT, seems as if RollerCoaster Tycoon is just a name now.