If you have conservative reps you could try calling and writing their office and demand they compromise on health care. With enough pressure they will cave.
If you have progressive reps call and congratulate them and tell them not to stop until the conservatives start participating in governance
Many of your later questions would rely on too much conjecture to answer. The simple truth is this unprecedented and we don't know what is going to happen.
I share many of your concerns as many people here do.