In my experience. I didn’t like Murena. I used it for a while (I think 6 months. I don’t remember well). And yes, it’s “ok”, but the interface is a bit broken.
The good thing is that there is a lot of software you can use there: OnlyOffice, NextCloud (much of their software), Searx and even Gitlab are there.
Another thing: if you like SMPT and IMAP, the Murena account offers you this. I prefer Proton, but it a good option too.
This proposal is meaningless bullshit. I can’t believe we are one of the the oldest species on earth and they keep coming up with such ridiculous ideas. This is a NO from me for this ridiculous proposal.