So not only do you want to throw out Attributes and Abilities, but skills as well. That's definitely a "not now, maybe in a brand new game" approach. But I'll set that aside.

D:OS 2 is probably going to have roughly 16 skills in each of its 10 schools (160), not counting weapon (4) and racial skills (5). Not many of those are in the D:OS 2 alpha right now since it is the early game.

One reason I asked for the list was because the effort of categorizing them and figuring out the distribution would give information which you could feed back into the design of the new ability categories. I highly doubt that you've already designed 160 skills to go with your new system, so trying to fit the existing 50 skills into your system would be a good starting point.