IMO, the only possible value to dragging this inevitable confirmation out is to provide the people a teachable moment. The Republicans have decided not to do this, either.
I know I'll draw fire for this, but 0 was elected, and under the constitution he has the right to nominate who he wants for the SC, unless they are clearly unfit. Senate advice and consent was meant by the founders to determine fitness, not reject on the basis of ideological differences. That's why Dems were wrong to derail Bork, Estrada, almost derail Thomas, et. al., and it would be equally wrong for Reps, if they could, to derail Sotomayor on the same basis.
This is just replacing a lib with another lib. Doesn't change the makeup of the SC at all. Frankly, at this moment in time, Republicans have a lot more important things to do than obstruct this nomination: namely, continue to educate everyone on what kind of socialist hellhole "paradise" 0 is trying his best to turn us into ASAP. I for one would rather see them stay focused on this big picture.