Hey guys, had to make an account here just to post in this thread.
Luffy will get a bounty that's closer to the OG Yonko bounties. I think he will be the one to take down Kaido, and play at least some role in either taking Big Mom down, or driving her away. I think Big Mom will get finished either by BB or serve as a demonstration of the power of SSG, so in the end Luffy most likely won't be credited with *taking down* 2 yonkos. If CP0 doesn't get involved, they might only relay only some crucial bits of information to the WG, so his bounty won't yet reach the 5B's. If they get involved and taken down, IDK.
Since Luffy is going to meet Shanks soon, I think it would be fitting for his bounty to be near identical so Shanks', or even slightly higher to signify how he's "surpassed" him.
Luffy - 4,050B
Zoro will probably get 1,5B for defeating King and fighting Kaido.
Sanji taking down Queen will most likely get him a bounty slightly behind Zoro's, like 1,4B
I don't think anyone else is going to get major raises, maybe somewhere near the ones BM's kids or Kaido's Tobi Roppo have.
Since things are going to hit the fan after Wano, I think bounties won't play much of a role for a long time. Since Luffy will be turning the world order upside down, bounties will become irrelevant. We might get that short sensation of Luffy getting the 5,6B bounty, and it will most likely be the last bounty ever given by WG.