My thoughts on each addition:
SFGAdv: Awesome ride! Unique, thrilling, and rounds out that corner of the park well. My only complaint is the capacity doesn't seem to be the best.
SFNE: Great ride! Am I the only one who hates the logo? I mean, why did they make her look so chunky, lol
Great Escape: Looks like a fun family ride. Not surprised to see something like this added
La Ronde: Typical La Ronde-style addition. Was honestly expecting a Free-spin but new flats are always welcome, however. With all of the flats they've added in recent years, I'm shocked that they yet to receive a superloop.
SFA: Very overhyped teasing campaign. I think at very least they should've received a small (adult) waterslide if not a watercoaster. The general public doesn't seem to be very enthusiastic about this addition either
SFGAm: Excited to ride it. Glad to finally see a new thrill ride after a 13 year-drought
SFSTL: Looks like an awesome waterslide! STL Hurricane Harbor is already really good so this is icing on the cake.
SFOG: It looks alright but I can't help but be pretty disappointed. I was expecting Wicked Cyclone South but what they got was Goliath South, but not nearly as tall or fast. Short, and seems to lack in the airtime department compared to the other RMCs. It just sucks that they removed a whole lap from the ride. Wouldn't be surprised if this ends up being the worst RMC, but even that makes it a good coaster I guess.
SFOT: Cool ride, but what's with the double-naming? Couldn't they pick another DC Character than one they just themed a ride to in 2016?
SFFT: Looks awesome but the capacity is well... not great for a park of this size....
SFMM: Love it! Magic Mountain really needed this. My only complaint is the weird name. Why not just name it Spinsanity or something?
SFDK: Don't think this was needed here since they have a superloop but I guess it looks nice where it is. They should really just officially make that section of the park a D.C. area
SFM: It may not be the best coaster, but it fits really well for this park. The GP seems to love it. The colors look really ugly though, in my opinion