Yeah, all signs point to something going down that changes the tone and direction of this arc (like many predicted). The burning question is what this may be. Grand Priest showing true colors? Frieza and Frost treachery?
What even could Frost and Frieza do to turn the tide of anything? I guess them being minibosses/part of the final run would be neat, but I see it like this:
Frost partners up with Frieza. The former wants survival since he's probably weaker, and the latter wants a fairly strong friend and a universe that's assured a win. But Frost's universe is like, down a bunch of dudes, so hedging bets on them is pretty bad. (Unless things change, but then again maybe that universe is better off since their total team is probably stronger going by just the secondaries). Does the ruleset even say either person can switch universes? I guess wishing him back in that universe with the dragon balls, but still, that's a stretch.
Frieza is probably crazy strong, but I don't see Frost being all that strong. I don't know. I feel like their teamup is just going to end after an eps of one betraying the other for whatever reason.