CE hack existed back in the csv years, but it wasn't like now, with so many hacks and perfected them for ce as well
i thikn that with csv ppl needed to work a little bit more, but the 1 click hacks destroyed it
now that it can be done again, its just easier to put in a script and voila skill hack for every skill, rather than change manually each skill....
i do find, however, that vac hack is easier in csv, as you do hack only in a specific map (at least i do), and you don't need to turn on/off the hack everytime you pass by a map...