I'd rather not do any reverts the process so far has already been
painful and I think it would be better to put up with pain and work
towards a long term solution then worry about more short term
inconsistencies.
Sure, I'm all for followup patches rather than reverts. Improve what can be improved, and remove what can't. But the current forms are a mess. The usability and aesthetics of login and signup directly impact our highest priorities as an organization, so it's not okay to let them degrade in the name of hypothetical future improvements.