Wholesale repeal is ill advised. There are parts that need to be modified. Especially that requiring all people to purchase insurance.
Republicans are playing politics first and foremost with this issue. For some reason they want to ignor the CBO projections of potential savings for Federal expenditures.
And they seem to forget that at at one point 70% of Americans WANTED healthcare reform. They are playing with political fire with this issue and may well get burned badly before it is done.
The only thing the Republicans have on their side in the healthcare debate is the fact that the democrats remain completely incompetent and lost when it comes to framing and delivering a message on this, or just about any other issue.