I always look forward to @dpearl’s thoughts but as far as many progressives go, it is commonly discussed that the revolution isn’t finished at that point - Sanders will have to go campaign for Manchin’s primary challenger (and told Kyle Kulinski he would). I’m sure he won’t be the only one we need to get rid of. (note this is not equivalent to Manchin saying he would vote against the Democratic party if Sanders got the nomination). But full court press of EIMfA starts now and I’m not buying your arguments to the contrary. Step 1 is bringing in the disenchanted voters. I’m convinced Sanders can and maybe Warren can too (but I’d rather not find out).
So the bills won’t be shelved in your scenario but I have no problem with incremental reforms if that is all we can get for 2 yrs or even 4 years. But now is not the time to full court press on that.