Lurker > BernkastelWitch

At least for me to add explanation on what I said earlier, I feel four is way too few because usually most games just go with the safe core four party archetypes and don't even bother to deviate or add anything unique.

At least with a bit of a larger roster if the devs care, you can get some more creativity or underutilized archetypes or roles and add variety.

I do know years ago when I posted my game concept on this site I had people say the game will automatically fail due to the large cast. Though my mentality is that as long as you can flesh out them mostly well and have the gameplay features to synergize with the large cast, it should be fine to go for a larger party size.

It ultimately depends on the kind of game you are going for.