@Cinera
As always a nice thread(gonna write soon my though for King bounty)
My prediction and also though about two scenarios for the bounty for the flying six.
First of all we should look up for the last chapters.
Oda hyping up the flying six a lot, at most Sasaki and Who´s Who.
Either he give them only a "fake" hype so they get defeated later or he really build up these as another monsters from the Beast pirates.
If the first scenario happen with Sasaki and Who´s Who only having a fake hype around them and Oda don´t planning much with these characters,then my bounty prediction would be kinda this for the flying six:
Who´s Who 750Mio
Sasaki 710Mio
Black 606Mio
Ulti 550Mio
xDrake 480Mio
Pageone 450Mio
The flying six would be kinda in the same range as Big mom´s Veterans, with Pageone beeing the weakest and Who´s Who beeing probably the strongest and probably little weaker then a YC4 lvl character, I don´t would expect much from the flying six fighers, they would kinda get little hype and end up in a fast defeat.
If he plan to take out a Calamity(as Jack who probably get defeated by Luffy and lose his calamity position) and plan to replace these with one of the Flying six, in that case I think that would increase the hype a lot about the flying six fighters and would put them into a another lvl, because they would kinda have a potential to became a calamity and don´t beeing far weaker as in my prediction above.
In that case I would bet my money on Sasaki as a new calamity while Who´s Who probably get defeated by Zoro.
Overall the bounty prediction for the flying six if Oda want to do more for these characters(as replace them to a calamity position):
Who´s Who 800-900Mio
Sasaki 800Mio-1.1B (probably replacing a calamity, would give him a bounty with 900Mio or above as a replace for Jack or any other calamity)
Black Marie 730Mio
Ulti 650Mio
Pageone 566Mio
xDrake 500Mio