About MSQ and the WoLs
Honestly I dont see the solution being us fighting against them. Even if we somehow stop them Elidibus has time on his side. Once we are gone he can just start up the next round of WoLs.
I also dont think that its bad that we have a few with the echo because Elidibus does have a point: We will be gone somewhere in the future and there needs to be more adventurers that will protect the normal people.
I guess we just have to stop and put an end to the Ascians. Because it seems that WoL are born in conflict. And its not that easy to become one because even on the source there had only been a couple of them active at a time, at recent times we had three and there should be many more echo users than that. Maybe those two soldiers wont even become WoLs.
So if we stop the Ascians then there should be no conflict that needs specifically WoLs thus no loss of balance. If we just stop the WoLs then its just a short time win.
About Venat: The Amaurotine was female. Yet when Hythlo talkes about Hades old friend (which is us) he changes it to he or she depending on our own gender. I think that might be a good clue that Venat is not us.