I would also prefer a party of four, and not a party of four supplemented by a gaggle of bench warmers back at camp, but four only. .
I'd advocate for the complete failure of that game.
I can hardly even conceive a WORSE idea that stucking a 100-hours long story-driven campaign to such a minuscle number of characters.
DOS 2 did it and it was entirely to its detriment.
Every time I play an Owlcat game (which to be fair come with their own separate set of issues, design wise) I'm reminded of all the areas where Larian titles fall short.