I'm kinda sick of people using Inventory Management as a reason for NOT doing something good for the game.
Inventory Management is a mess right now and needs to be fixed regardless of party size, camp supplies, or whatever else people are frustrated with BECAUSE inventory management sucks.
IF they don't fix Inventory Management, then yeah, a party of 6 would make the issues even worse, but that's no reason to not have a party of 6. Fix the dang janky Inventory Management issues and SO many other issues would be resolved.