Gloomhaven is pretty much only playable with a set of organizers in the box, (which lifts the lid by an inch), and frankly it could have been done as an episodic. Fifteen map sections, a dozen monsters, 8 character boxes and half of the obstacles probably covers your first 30 hours playing. With everything in the box day 1, The setup and teardown time is huge, and I estimate it saves us over 20 minutes just having the organizers. But not having a box full of unused stuff also would fix that issue.

Loss of momentum will kill your odds of getting a scenario running.

Munchkin went too far the other way. Do I need deck 3 or 4 next? I can't remember. But at least they sell a big empty box to organize all your sets into. Much easier to stack with the other games.

If you avoid that problem, you then also have to resist 'refreshing' your game look and feel. Otherwise I end up with a base game and expansions that don't match in style, and I am not happy. For instance, I bought a Settlers of Catan addon that barely made it out of the box because it didn't match :/ My friend bought one before the change and we always played with his copy instead.