I want to stick with socketing talents, and I know that some of the advanced careers introduce 3 or more talent slots, but that this is pretty inconsistent.
I was thinking of allowing all characters to buy an additional talent slot as they move up the ranks, so at rank 2 they can have 3 talent slots, 4 at rank 3 etc. I was thinking that this could be done as an Open Career Advance, one of two ways:
1) You spend an advance, and it locks one of the talent slots of the current career, so that when the character changes career you carry one slot with you. This offers no immediate benefit though, but encourages investment for the future (and I would expect most players to do this as their 9th or 10th advance)
2) You spend an advance and gain an additional slot of one of your current talents. This means you do gain an additional benefit, but won't be available to characters until they reach rank 2.
By implementing this rule, I would then effectively ignore all the careers with multiple slots, except where it indicates what slots a character may be able to buy. Thoughts? Suggestions? I'm not dead set on this and would welcome any comments on pitfalls I haven't spotted!