While I agree that putting up amended bills at the last minute is a lousy way to do business, the Critters do know what they are voting for; and should be held accountable for their votes.
There is always behind the scenes communications we don't see within the various party and special interest caucuses, and by the time a bill gets to the floor the majority party leadership more or less know if it does or does not have the votes; and the critters more or less know what they are voting for. It works this way regardless of which party has the majority.
If the final product leaving The House has a public option, it will be only because the critters have voted what they believe their constituents generally wanted and also what they individually believe is best for the country long term.
I don't fret about a public option. I have been on Medicare now for nearly 2 years during which time I have found out that I have a very serious ailment. Medicare, notwithstanding its low overhead, has paid their claims appropriately; something I could never say when I was covered by The Blues. I really don't know why folks are so scared of a public option, unless they are in the private insurance industry. And even then, just as Medicare leaves room for profitable supplemental policies to be sold, there is no reason such business opportunities wouldn't exist with a public plan.
As for tort reform, it has been tried here and is generally considered a total failure; it certainly didn't result in price reductions. It just locked people out of an avenue for redressing real harm done to them.