[Margeaux]

As GS I 3-bet PF to isolate against a hand that is likely much worse than KK... if this hand gets to the flop 9-handed, when GS could have made everyone face 2-3 bets, I feel like GS has made a humongous mistake... the limpers probably go away when it gets raised and reraised behind them, and they have to call two cold.

This is usually a fantastic flop for both BHG and GS. As either of them, I'm taking every opportunity I have to bet this flop for value and to force out gutshots, BDFDs, and whatever else is out there. After a while I might give RG credit for a 5, but ... gotta get aggressive on that gorgeous flop, I think, in a big multiway pot with a big overpair.

Obviously this doesn't come up if it is 3-bet preflop though, which is why you absolutely have to 3-bet in GS's position.