Doing different kinds of things really makes developing a lot better for the developers though.
Not saying that they shouldn't finally fix the bugs and all, but i can understand why they don't.
After all, they also promised netherbrick slabs, so they have to do that as well, i figure.
I am pretty sure someone said it before, but they should really make it easier for themselves by giving every full block type automatically a half slab type.
At the moment it seems like they have to manually code every frigging slab, which is really inconvenient of course.