you'd say the baseball stadium
I'd still stay basketball. Why? The baseball team plays, according to this years schedule, 14 home games that one would think would be reasonably playable for weather.
http://www.gophersports.com/SportSelect.dbml?DB_OEM_ID=8400&SPID=3298&SPSID=38639
This year it appears they're taking the dome as their home field. I'm not sure if Siebert is unusable or they just prefer to have a certain schedule with no possible rainouts or otherwise.
The practice facilty is going to be utilitlized year around for the the mens and womens teams besides used as a recruiting tool.
Again, the revenue sports pay for everyone else, certainly including the road trips, spring training trips that the baseball team is taking.
Basketball, hockey, football, all come first.