Marek was incredible but has to be the exception, not the norm. Just because Marek played the 5 id hate having JB just automatically assume our biggest 4 can also play the 5. We had to do it the last few years and we were lucky that Marek is about the only guy willing to play the 5, take charges, and throw his body around against ACC big men even though he was like 185lbs.
Other than last shot situations or times where we are extremely desperate on offense, Jimmy should never see the 5 - especially now that we have 2 healthy bigs who have potential and are clearly capable.