Trying to cram it into the, already contentious, tax bill would be weapons grade crazy. I doubt they'll really try.
I agree with you and I think it rather ironic that this supposed "replacement health care plan" always was an key integral component of the "tax reform plan" that will both bless the wealthy with more tax cuts while forcing the gov't to shrink in size and services to the working class due to the reduction of revenues that the tax cuts create, a two 'fer of which is exactly what the GOP have been doggedly striving for these past decades.
If the Repubs are compelled to include the "health care plan" tax cuts for the wealthy and bear the brunt of the damage that this "health scare plan" will cause to the working class, they will expose what they've been trying to hide from the get-go. I'm thinking that's another reason why they're not going to do it.
That being said, desperation, especially the kind that is motivated by greed, has a way of shutting off the normal reasoning abilities of folks and makes them gear up into panic mode overdrive. It seems the Repubs have clutch pedaled to the floor, got a death grip on that shifter knob and are seriously contemplating about shifting into that gear.
Exploding clutch and gear box anyone?