The weather one has been around, at least for coaches, for a few weeks now. And yeah, I like it a lot. My riders in Munich and Belgium, I can program for them inside rides based on what I see (or longer outside stuff if the weather looks good). It’s a great addition.
StackUp is kinda meh, but people love that kind of thing. Looking at my numbers, (Ralph Wiggum voice): I’m a SPRINTER. 
90% 5s, 94% 1min. The 1min isn’t surprising, I win with long bombs. Next field sprint I ever win will be my first. 