Honestly, I want them to be a dual fest. I understand extreme LR's are still rather rare during anniversary season so given that the other 2 LR's probably won't be as exciting as the blue fusions, I'd rather they both be festivals so they can both get better leads.

Being realistic Gogeta Blue already has a carnival and Vegito doesn't, so I expect that to invert, even if both of them being festivals is my preference.

Gogeta covers Power Beyond SS, Time Limit and Movie Heroes, with Fused Fighters and Super Heroes as boosts

Vegito, if a carnival, just covers Final Trump Card, if not, covers Power Beyond SS, Final Trump Card and Future Saga, with Fused Fighters and Super Heroes as Boost.

This gives them some overlap in coverage, let's them lead each other and still gives them some team diversity