I have mixed feelings on this. On one hand, I don't personally consider Bluesky to be part of the Fediverse and I wouldn't want to be swamped by their superior numbers.

On the other hand, the more the merrier and it probably wouldn't lead to many more players anyway, judging by the handful of non Lemmy/Piefed servers that currently participate. It might also be a gateway experience into the real, non-corporate Fediverse for some Bluesky users.