You can’t fund something you’re trying to repeal at the same time. Kinda loses street cred.
I can easily envision a scenario where there is an instant, failed vote for repeal - for political consumption - followed by GOPers voting for certain aspects of Obamacare that they perceive to be popular. In fact, I’d bet on incrementalism of this sort.
Defund 2010. Repeal 2012.