Ok so maybe wait until the end of the fight?
What am i supposed to wait for?
Awakening itself was not bad (and them only using it as last resort is explanation enough to not reveal it until then), but they are both literally on their last leg just to even compete, let alone match BM.
Meanwhile Luffy has awakened three top tier abilities that he currently can spam, and is not only competing but actively matching BM´s equal, if not superior. And both Kid and Law have, both in direct and indirect words, accepted Luffy´s prime and main role in the entire raid. But that´s only the issue of individual might which they can´t match, and Oda could conveniently explain away with sudden powerups (Law awakening advanced Haki, Kid also, especially advCoC).
Then you have the crews, it´s by no means no exaggeration to claim that the entire Strawhats could match all the other Supernova and their crews, let alone just one crew.
So yeah, no matter how the fight ends with BM, anyone but other Yonkou, especially Blackbeard, competing with Luffy would be a joke.
I don´t remember anybody that did not look forward to the Supernova competing, but that concept started to die with Dressrosa already when Luffy gained his first cheerleader, and continued on till now.
The rivalry between Luffy and Kid is as credible as Luffy and Smoker, it´s devoid from any reality.