I met Aloth for the first time on the one save I had with the fixed Eder. His import is working properly. He was set to dismantle the Leaden Key and is all set in that regard. I'm not seeing any other import weirdness, unless Eder isn't supposed to react to anti-Eothasian behavior if he had become mayor.
Played about 4 hours, went sailing, did Deadlight, recruited Serafen. No issues in the beta patch, so the build seems stable!