I seriously hope some time during this EA we won't need a hack for a 6 person party.
Eh, tell me about it. I'd like nothing more than being able to just have it as a readily available option rather than having to download a specific software to manually edit a specific file in a very specific and unintuitive way.
Not to mention that it doesn't work anymore, as my previous post pointed.
Also, something I pointed just on Discord some time ago and that could turn out to be a problem even for modders: in my last playthrough (patch 4) done with the party expanded to six when I got at the end of EA (the final travel/ optional fight on the boat while navigating to Moon-something Tower) I realized that two of my characters died automatically because the game was HARD-CODED to allow only 4 characters on that boat. I hope the final game won't have much of this bullshit to navigate your way around or it could turn into a proper minefield for modders trying to fix what Larian refuses to fix.