I hope they go the interim route and try to land a top two pick. It seems odd that the Devils organization would bring a long term coach into this mess now. I'm sure Lou had a running list of candidates updated .. all Presidents and GM's do, so if they go with one or the big names avaialabe it's because they felt they were too good to pass on.
As for MacLean, I think his being similar to PDB is probably a positive. I think that PDB worked pretty well as head coach, but lost the locker room this season. Nearly every player regressed from last season, and that forced Lou to make the change. MacLean would more than likely provide a spark that was missing.