If the GOP passes a RyanCare bill in 2016 that still keeps most of ObamaCare's most destructive provisions in place (and by this I mean the provisions that have driven medical insurance premiums up through the roof), then there isn't a chance in hell they're going to get 60 Senators in office in 2018. They'll be lucky to keep the 52 they have.
I'm OK with the incremental repeal as long as the mandates disappear (it looks like they almost certainly will) and eliminate the regulatory burdens that make insurance so expensive as to be worthless to most people anyway.
The bill unveiled today is only one of three phases.
First phase is tinkering with the financial mechanisms to make Obamacare more manageable. Second phases is HHS issues regulations that would reduce costs and begin a transition period to free market health care. Third phase is complete repeal of Obamacare.
First two phases can be done through reconciliation and implementing regulations.
Third phase will have to wait until you get that supermajority and as you pointed out, no guarantee it will happen.
Politics is the art of the possible.
How did we get a bill to repeal Obamacare multiple times that Obama vetoed?