Other changes Trump has made are permanent, meaning a new administration will have to go through the rulemaking process to consider whether they want just to reverse the changes, or whether they want to take the occasion to make some modifications of their own. I'm not sure whether a straight revocation of a final rule has a lower legal hurdle for justification or not--it's possible a new cost-benefit analysis would still be required. Since Trump's people have changed the parameters for such analyses the situation gets a bit more complicated.
Assuming Biden wins in November, watching the new administration navigate these hurdles will be rewarding.