I know very well how many members does BB have atm. But like I have previously stated, I BELIEVE HE WILL HAVE 14 crew members aside from himself. Haha. I never said he has 14 members now.
Imo I think all of this is just established.
- Luffy has said he wants 10 crew members since Chapter 2
- Oda loves football, which is made up of 11 person teams
- Blackbeard had 5 members, then gained 5 more by Marineford. Then he gained 1 more over the TS.
- Shanks has 1 Vice Captain and 8 officers. Including himself, this is 10. If Mihawk actually does ally with him (depends, he doesn't have his Shichibukai position at least and he has to be part of a faction if him and Zoro fight). So 11.
- And for fun, the Marines actually also have the potential for 11 major officers. We know the world conscription recruited powerful individuals to replace 2 Admirals. We know the Admirals and the runner ups all have Admiral codenames based on the Chinese Zodiac. Right now, we have 6 of 11 revealed (Akainu, Fujitora, Kizaru, Ryokugyuu, Chaton, Momousagi), 7 of 12 with Aokiji. The last 2 are VAs with the same codename structure. This can suggest there are 5 other VAs with the same codename.
I also personally believe Kizaru might be a future villain for Luffy (i.e. vegapunk stuff), and Aokiji really didn't leave the Marines (it was a plan set up by him and Akainu to infiltrate the BB pirates imo), so in the end you could replace Kizaru with Aokiji again if need be.
So yeah....11 is a pretty magical number for Oda, or at least seems to be.