How about not even look for a new owner, and just... check the content and complaint levels? If I was hacked and hosted spam, getting blocked/banned for months

How about not even look for a new owner, and just... check the content and complaint levels? If I was hacked and hosted spam, getting blocked/banned for months at a time when... the spam is cleaned and the hole that allowed it is fixed ASAP... that gives folks less incentive to fix/clean/remediate.