Oda had Yamato, Brook and Robin in literally the same panel and didn't have them meet. (Though it was Yamato running there with a giant that broke their fall!)
At this point he's intentionally holding off on meetups and teasing the audience, rather than missing opportunities. Multiple Strawhats have commented on multiple occasions now "Hey, who is the person taking care of thing X? they're aware that there is some other heavy hitter helping out and they'll appropriately credit and acknowledge Yams when its done. "Who is this young lord they're talking about?" "Who is guarding Momo?" "Who is holding off Kaidou?"
@electricmastro:
Information checked on by the author of the manga himself, so perhaps not as faulty as one may think.
Oda gives it a pass over to add in details that only he would know, like say a fruit name or a characters height, but he doesn't thoroughly fact check every detail, he leaves that to the editorial team.
There's been mistakes in the vivre cards multiple times, and the databooks before them.
And even if Oda DID painstakingly go over every detail himsellf, still prone to mistakes and the option to change stuff later if it wasn't in the manga proper.
Heck, Oda spelled out SHilliew in the manga a decade ago, the vivre cards followed suit, and then like three weeks later in the actual manga he changed it to the proper "Shiryu". Card was out of date and incorrect immediately. And some characters are on their third or fourth card already due to fixing mistakes or dated info!
Plus theres also "concealment for the sake of spoilers" when it comes to powers, haki, characters being dead or alive. Remember when the databooks said sabo was dead?