There are many other unranked teams other than the Gophers that have performed well lately - many of which are teams that haven't lost any games, so it's not just the teams that are in the rankings you have to contend with. Colorado is unranked in the ESPN/USA Today poll and most certainly will get ranked. Illinois is unranked in both polls and is going to get in. Wichita State should be in after they have continued to win, including a road win at VCU and neutral wins over DePaul and Iowa. New Mexico should be ranked after remaining unbeaten and winning the Paradise Jam (with a victory over a ranked UConn team). I think that Baylor, Memphis and UConn are the only teams that should drop out, but UNLV might drop out as well.
You could make a similar argument for Georgetown being ranked as the one that is being made for the Gophers here - only one loss to a top-5 team, and a top-25 win in the last week. But of course no one here seems to think Georgetown should get in ahead of the Gophers - imagine that