BP is going to likely only have a brief intro then go along with whatever his role is, he does have a solo film afterwards so they do not need to dive too deep into his character. He'll probably have a Rhodes/War Machine type of capacity in the film. He's there and he does matter to the events but not the main focus?
As for Spidey, everyone already know who he is and if the old email hacks are to be believed, they only planned to have him as a cameo. Of course that could have changed now. If they do give Spidey a bigger part though then that likely cuts to BPs screentime, which would suck but ya'll wanted your Spidey in MCU.
But at the end of the day, the film is going to be Cap vs IM with Spidey and BP and the rest of the cast like Falcon (and maybe WM), BW, etc... having smaller parts that just takes sides.