Pro Sites: If free trial disabled, delay site/user creation until payment received.

There's a bug with Pro Sites when, even when the free trial is disabled and the customer does not pay, the site/user is still created. Over time this bogs down the database and it's tedious to remove them individually.

I understand that this has to do with how WordPress works, but it creates hundreds of inactive, never used users/sites on the network and it's painful to remove them.

I remember seeing this mentioned in previous threads and saw a similar thread on a related issue here.

Are there any plans to fix this bug in the upcoming major update to Pro Sites?

If not, will there at least be a way to bulk archive/delete sites and the users attached to them that have 1) never been active or 2) been inactive for X days?