You know, I think I agree with you mostly on this. The thought of laws being repealed and re-passed, back and forth every few years doesn't strike me as a very good idea, but I think that an argument can be made that the current system rewards what I consider to be "fake policy". What I mean by this is that let's say the Republicans filibuster nearly all of Obama's judges (which they have). Because of this, the public doesn't get to experience liberal judges and decide for themselves if they like them or hate them. Likewise, filibustering Obama's economic team hinders his ability to put in place liberal economics. You may think that's a good idea, but I would submit that this allows the GOP to call whatever system is in place in lieu of an actual group of professionals, liberal and smear it as a failure. This merely fools the public. It's no more healthy for democracy than capricious laws that change every few years.
Would it be better for people to see actual results from elections? Meaning if a Republican gets in, he gets his judges, he gets his laws, and the public decides how they like that. If they hate it, the GOP loses elections until they change or they convince the public that they were right after all. The current system merely enables the parties to spread FUD.
I would not mind, however, changing the tenure of judges in exchange for removing the filibuster. Making the SCOTUS judges hold their jobs for a maximum of 20 years seems like plenty. And maybe federal judges get 4 years and can be re-appointed indefinitely. This way a bad judge can be fired while a good judge can stay, all decided by elections that happen every four years.
The current system isn't working. I'm sure there are things we can agree on that would improve it.