On Austin vs. Chip, it's not even close for me. Hollins easily gets the nod and should have been starting more last year. The Gophers couldn't turn the opposition over to save their lives and meanwhile Hollins, with great length, a solid all around game and above average thievery abilities is on the bench.
Armelin loves to shoot and perhaps there's an 'instant offense' role for him on this year's team, but even offensively he needs to improve on how he finishes. As mentioned earlier in this thread, he showed no fear in getting to the hoop. However, for pressing the issue on offense as much as he did, his free throw rate of 21% is extremely low. Put another way, if he's going to get minutes, he needs to draw contact in the lane. Joe Coleman (who I think will turn out to be pretty good - not getting much props from GH's now, but he will) may be able to help him in that regard.