Imo we had our group fight vs Kaido. Now there wpuld not be a second one, even if there is an act 4 and 5 with a rematch. Luffy is confident he can now beat him alone and so even if there is another round, with a stronger Luffy, it will be solo.
Zoro has done his part, he get an hype nobody couod dream of, it is just that Luffy get even more. At best Zoro will have his fight with King now or in a possible next raid.
Law's beef has never been with Kaido but with Doffy, nonetheless he had a way smaller role than Luffy and that was (for a part) a duo fight. Yet Law role was not comparable to Luffy, later in the fight Law become Luffy's cheerleader. Now most likely his role with Kaido is done too. At best, since he is also still pretty well, he can go help Kidd and Killer or do something in the dome (fight/help with a calamity, some last moment save/support etc.).
Kidd and Killer went after BM without a 2nd thought. I doubt they will join Luffy again when Oda made Zoro and Law leave and Luffy clearly state he will fight alone. Maybe theybwill be lucky and shine a bit vs BM. Who knows.