I had actually talked to one of my friends about this at the time of the NCAA regionals, that UND should bid to host at the Scheels Arena and put a guarantee on the attendance to be greater than the average of the last 5 years lowest attended regional. To answer the first question, no there is not enough seats in Scheels Arena as was evidenced by the 2006 regional at the Ralph that broke several regional attendance records. I would actually be willing to bet that the entire ticket allotment would be sold out within days of them going on sale in fact.
But, and this is in regards to Goon's statement, this would give UND a chance to HOST a regional and guarantee to not be sent out East or the closest regional from home at 900 miles driving (or approximately 13.5 hours driving). Plus it would give a much better environment that everyone is looking for by having a huge number of passionate fans in the building. Also having at Xcel Energy Center doesn't necessarily help because there is a 0% chance that UND could host there, imagine the backlash from ALL of the Minnesota schools if it went to UND over any of them. Bemidji would have a much better chance at hosting there than UND.
EDIT:
Boo, you beat me to it while I was typing up my response as well!
I would argue that this would include almost all coaches that are already highly likely to already be placed in "home" regionals ala BC, as many of you know have had an average travel distance of ~100 miles for the last 12 years or so. But this would be for ANY Eastern team in so far that the travel distances for many of the places that currently host regionals are only several hours driving from their school and so every year you have around a 50% chance (2 regionals in East and Northeast) that are close to your school. And also by not supporting campus sites it gives a higher guarantee that you won't be playing in front of 9k+ extremely biased fans of some school out in the West.
Just as an example this year, how many of you think it would have been better to play Yale in Grand Rapids in front of the 2600 or so fans there or 12k in Grand Forks? Would UND have been able to win the game if it was in the Ralph? Good question but almost every player says that they can feel and feed off of the crowd when they play at home so who knows.