I’m interested on what changed that make it differ from Mull in a non recommended way. Are you referring to their 1st MR? where they outline:
- Replaced Arkenfox & Brace preferences with ones from Phoenix 2025.01.06.1…
- Added support for Google Safe Browsing (Safe Browsing is disabled by default and can be enabled by setting the following preferences to true in about:config)
I understand Mull was using arkenfox which is sort of the go-to reference, and now ironfox move to phoenix. The safe browsing is the same approach Librewolf follows, though I don’t like their comment on a proxy. I don’t like their choice of the brave search engine, but I always replace that with searxng tweaked a bit.
The MR doc doesn’t look too terrible, but don’t know about the changes themselves.
Regarding omemo, dino is getting there, see its closed issue 1609. Not sure why it has taken them too long for a new release, but they have the stuff already merged.