By capacity %, the worst attendance teams in the East would be Carolina, Columbus, then the Islanders - everyone else had 90%+ capacity attendance for home games.
Isles? They just moved to Brooklyn, and part of their sale (if memory serves) from Wong was that they HAVE to keep the Isles in Brooklyn at least through their first lease for 25 years... except their is a mutual "out" clause after 4 years apparently, and the owners may only do that if they have another arena built - it makes no mention of whether they are allowed to relocate or not. So 2019/20 season may be something to keep an eye on? Especially if they lose Tavares to UFA in 2 more years. Would new owners be willing to move to QC?
Columbus? They just had the ASG there 18 months ago. They are obviously still trying to grow the game there, but their attendance is undeniably one of the lowest in the league over the last half-decade. Seems to be trending back up slightly, but still not filling the arena very often.
Carolina? Similar attendance issues of late, but I believe I saw a quote from Bettman yesterday saying outright that Carolina would not be moving... doesn't mean shit, and they've been linked to QC relocation rumours for months now.
Any other team that was struggling even 3-4 years ago is now having playoff appearances, filling seats like never before, etc. Not sure what happens there. Either way, I have seen a virtual tour of the new arena in QC and it is pretty freakin nice. Would be a shame to have it empty for too long.