Hacks will continue to be updated, but the current crop should be more than serviceable 'till the next EP is out.
The most Sim-endangering things(the freezing to death in winter, or spontaneously combusting in summer) have fixes, and the most annoying(constant water balloon fights was top of my list) do as well.
On the plus side: some good object sets, the weather, fishing and farming options, a couple of new careers.
Seasons enhanced more than it borked for my game.