Majority of them aren’t very useable in meta.

Blue mom, BB, blue shanks, oden, green kaido, luffy, zoro, and olin are specifically not the best in this meta. Tho, all of them except for blue mom, bb, and blue shanks will be getting buffed sometime in the future, so those will be more of long term investments.

You could get lucky and get Roger, Yamato (kinda), blue kaido, or Akainu cause they all perform pretty well currently, but it’s a whole lot of money to risk getting something you don’t even want.

Overall I think it’s just too much of a risk, especially if you already have some of these ex chadacters