They can become Radovid's adoptive parents, I mean, he is younger than Ciri, perfectly viable. Triss can teach him that not all mages are evil (only like 99% of them) and Geralt can teach him some ways to turn black ones into mince meat.
Redania becomes paradise on earth. It would be beautiful.
Perfec' ~ CDPR you've found your new writer.
That image cannot form in my brain without almost killing me from perfection.