I go along with Roland - I would suggest to stick with the subskill system. Its not so bad at all. To mix the game system with different other RPG-systems will make the game unbalanced.
Every player is free to give his character special skills (as stated in the core rule book). Why not use them? In the different sourcebooks there came up a lot of new skills (which can be used only by the chars of the specific megacorporation, which is IMO complete nonsense - why can only imperial characters fly spaceships?

), so why not give some skill pics on a new skill, which is not in the general list?
But I dont think thats a good idea to give chars additional skill picks points. Why? So there are specialists, ok, why should every character be an allrounder who knows all and everything? E.g.: I wanted to play a spacecraft-pilot, therefore I had to take several picks in spacepiloting and spacenavigation. On the other hand, I had no picks free for e.g. chemistry, acrobatics or climbing. The heck with it! We are all specialists in the real world - why should it be so different in a RPG?