New rule, this year, and no more "forced pairings". So yes, in principle a F4 with Conegliano and the 3 Turkish teams is possible.
It is possible but i don't think Cev will let that happen as having 3 Turkish teams and 1 Italian on F4 would be bad for TV rights, commercials etc. They wouldn't receive good money so i don't think they will let it happen.
I think/hope there will be exciting matches in play offs. Vakif, Vitra, Fener, Modena, Zurich and Moscow. All of them are powerfull and they all want to be go to F4.
Vitra might be better against Fener with their full roster but everything can happen.
Vakif is really good but Zurich is a good team, too.
Moscow would be favorite against Modena but Modena is not weak.