I will follow it too.
Thank you to
@Devil's Elbow for his stage by stage opinion which I will use to judge.
Stage 2 is an easy MTF but it is steepest in the final kilometers and it will reveal any GC contenders not capable of being competitive by Madrid.
Stages 6 and 7 in Andorra could be harder than they look.
@Devil's Elbow describes these as "Middling unipuerto(ish) MTFs". I'm glad we added "ish" as there are some decent lumps in the middle of those stages and at altitude.
The TTT on stage 5 is meh and what is so bad about Bola del Mundo on stage 20? Stage 20 incidently might be the queen stage you are looking for except its a bit short.
There is no a full opening week of sprinters stages like the Tours of yesteryear. It could be much worse.
Its the Vuelta well known for unipuerto MTFs and it will likely be hot. So I am surprised to read all this whinging and negative hyperbole from seasoned posters. I get that there isn't a clear Queen stage but it will still be an interesting race. Its the riders that make a race not the route and we usually find something to complain about in any route.
My $0.02.