Here is a quick run down of Vuelta stages we should consider:
Time trial: Choose 1, i reakon
Prologue/Stage 1: Moto Gp circuit 4.5km and flat
Stage 7: 30km ITT, flat
Stage 20: 26km ITT Made for TT specialists, again flat.
Sprint Stages: choose 1, i reakon
Stage 2: Pan flat
Stage 6: Couple of early catagorised climbs, but couple of circuits in finsh town make a sprint likely.
Stage 15: Windy, flatish day, 2 cat 2 climbs, i think freire type sprinter day
Stage 16: Transistion day, so breakaway or sprint
Stage 17: Last chace for sprinters before last day. Defo a sprint especially if there was a break that stayed away on st 16
stage 21: short final day 110km, definietly a sprint.
Breakaway stages Choose 1, i reakon
Stage 3: Has some cobbled sections in it, but they will be taken out if weather is bad. Sprint or break
Stage 4: Covers parts of the routes taken in Amstel Gold and leige-bastogne-leige, so a classicy like day.
Stage 5: first day after rest day, a few catagorised climb for the first day in spain, possible break day
Stage 11: 3 climbs spread out across the course (1 of each cat 1,2,3), likely break
Stage 18: hard climbing day but last two clims only cat 2 and 3, not really hard enough to put good gaps in GC. This stage is also a Breakaway candidate
Stage 19: Last climbing day, four good climbs that go cat 3, 1, 2, 1. Although downhill run to finish. Another possible breakway day, if favourites look at each other
Mountain Stages Choose 2, i reakon
Stage 8: 7 cat 2 and 3 climbs with a mtn top finish
Stage 9: 6 cat 2 and 3 climbs but with downhill run to finish
Stage 12: 2 huge cat 1 climbs + mtn top finish. Over 3550m of climbing
Stage 13: Massive last climb + mtn top finsh
Stage 14: another mtn top finish with the finish having over a km of it at over 12%
Stage 18: hard climbing day but last two clims only cat 2 and 3, not really hard enough to put good gaps in GC. This stage is also a Breakaway candidate
Stage 19: Last climbing day, four good climbs that go cat 3, 1, 2, 1. Although downhill run to finish. Another possible breakway day, if favourites look at each other
Make of this what you want but that is my thoughts on Vuelta. A few stages could fit in multiple catagories. I also grouped the big mountain stages with med mountain stages. If you wnat profiles go to cyclingnews homepage and click on vuelta link.