Fmr Speaker Boehner says the GOP will not repeal Obamacare

[True Federalist (진정한 연방 주의자)]

Getting rid of the mandate while keeping guaranteed issue will kill the individual market.  Unfortunately there are way too many people who won't get insurance if the penalty they face is pushed off to an unspecified future, so under a plan like this, only the sick will have an incentive to get individual insurance.  Worse, the fixed subsidy will mean that sick individuals will end up paying way more when the individual insurance market craters rather the sick government that caused it to crater.

Also, unless the tax credit is not going to be fully refundable, there's no point in not having it be available during the year unless the idea is to keep poor people from getting insurance. (Not having it be fully refundable is also a way to keep the poor uninsured, just more blatantly so.) The working poor generally can't afford to pay the costs upfront, even if they would get them back at the end of the year via a tax credit.  I dare say that many middle class tax payers would have a tough time managing that were they paying the full costs themselves instead of being covered by employer subsidized insurance.

While the plan being put forth here is generally better than what was available pre-ACA, this isn't the pre-ACA era.  Voters aren't going to compare what happens to them to what was the case eight years ago, they'll compare to what was the case two years ago.