Honestly, I don't think I'm in any position to really talk about this, I only know a minimum about the entire middle east conflict, the myriads of interconnections, different movements, tribes, rebel groups, etc.
If I still have to, I'd say that even though Assad is not really any better, less brutal or deadly for the Syrians right now (and probably the next few years), I do believe that the long term future looks better with Assad winning. And unfortunately it really seems to be either ISIS or Assad at the moment (again, with my limited knowledge on the matter), with "none" not being a realistic option. What I mean is that with an Assad regime in place, changes for the better can be implemented easier than with an ISIS controlled Syria, where I'd hardly see any room for improvements that don't involve military conflict once more, with all the ramifications we see right now as well.
Agreed, my original point was rather that in this present conflict, Assad is pretty much just as terrible & brutal as ISIS. Assad only seems to be the better option for after this conflict, which is what I guess you meant as well.