It depends, I think if Willi and Leia reconcile and he tells her how Miru became such an important part of his life, Leia wil accept this. And if you decided on the "open relationship" stuff due to Miru´s very high sexdrive, I am sure the three will come to a "fullfilling"
solution. I think this is already hinted at in SG with Ayua so close stylewise to her Auntie Leia, which would only be possible if Leia is a big part of her life.
I also estimate that Ayua having halfsiblings is near certain, since going by what we learned about them, Wili and Leia completely reconciling would also mean that Willi would be the father of not all, but at least 1-2 of Leia´s kids.
Agree with you on this. I am in the game for Miru, Leia, Monica, Dana and Zoey, with Leia and Miru in the clear lead.