Wrong, wrong, wrong.
Big mistake.
Not moving strongly to reverse Obamacare makes the GOP look like the flaccid same-but-less also rans that voters tend to perceive them as.
Obamacare is one of the two or three original reasons for the recent electoral realignment, and voters intuitively know it could be quickly addressed legislatively, given the political courage. Leaving it in place makes the GOP look opportunistic and dishonest and virtually guarantees they will suffer in the next election.