I would absolutely LOVE at least 5 player size team. 6 would be acceptable but 4 doesnt feel right for the volume of baddies that take turns. Each turn consists of one relevant action (unlike DoS where you do all kinds of stuff) and they even went so far as to overtune the action economy by giving everyone overpowered bonus actions to makeup for the lack of bodies taking turns.... but thats a different discussion(or hell, maybe its relevant here, its absurd to think every class should need bonus action disengage/hide/shove). Overtuned bonus actions wouldnt be needed with a larger party size, they could re-balance around that if needed. If they go and add all the PHB classes and most the subclasses... then having those two extra party slots are going to feel so nice for group composition
