The D should be fine. Wolanin is much more of an offensive minded Dman but that core last year was littered with freshmen playing big minutes. Wolanin, Shaw, Poolman, Peski, Johnson, etc will be a nice group banking on natural development. Although we lost high end players the last two years we are bring back underclassmen that have played huge minutes in big time situations. I expect guys like, JJ, Hoff, Pogo, Gersich, etc to have solid years.
To your specific reference, Poolman didnt play against the greatest team ever assembled ( ) during last year's NCAAs and I thought our D looked very solid. Wolanin was man. He's also coming off an MVP at the Sens dcamp. Watch out.