The EXP system DAZ came up with for the Gen4's was meant to do away with that, but sadly only a couple of venders used it, the rest just kept on using the same tired old system they were using with the Gen3's.

With EXP the vender creates custom channels for their morphs, you install them and run the updater, then load the .cr2 that was created when you installed V4/M4/K4 and the new channels will be there for you to INJect the morphs into (wont work on a cr2 you've already loaded and saved back to the library as that 'breaks' the EXP system).

You don't even need DS to make them, with just a text editor, a little knowledge on the insides of a Poser file, and some patience and anybody can make their morphs EXP compatable.