As it happens, anyone knew an Etherpad replacement or alternative?
Squad serves a great purpose for developers working together on code, but it isn't embedable, and doesn't do wysiwyg text formating. It's focused on syntax highlighting and opening and saving local files. So for some it may be an alternative, but not for everybody.
Frankly, the best alternative is to try to scrounge around for old EtherPad URLs and just reuse them until March. :(