I think the ilvl sync should be tighter if anything, not more lax. Hell, Alexandria is down within 15 minutes or so with a group where the DPS are pressing their buttons and at least half awake as it is.

I do agree that the wall between trash packs is stupid and needs to go, it just arbitrarily inflates how long the dungeon takes. Alexandria specifically is an offender here because some trash packs come in two waves. Let people pull everything to the boss arena if they dare and are able to manage it. Before I gave up healing, the giant pulls were my favourite thing because they actually forced me to flex my healer muscles a bit, focus and put some effort into keeping the tank alive.

The one MSQ thing I wish they would change is Castrum/Praetorium/Ultima Weapon. I feel like allowing a cutscene skip if everyone in the instance has seen it before would be nice. I barely even do MSQ roulette anymore and I swear I can basically recite Gaius's elevator speech by now.