You are missing the point, you would need a very long list of talents to cover everything,No need to change the system so drastically, when that's exactly how Talents are intended to work - give more specialised bonuses to the broader skills.As for skills, I'd like to see skill like the attributes generally broad, but with the option to focus,
Example: Fighting 1 [Axes 3], or Marksmanship 2 [Spear 3]
I would let the players have whatever they wanted as long as it related to a listed skill, they could make up any focused specialisation they liked, a simple way to customise their characters without breaking the system, what you gain in narrow function you loose in broad function, it's inherently balanced,
Best part is you can have the the broad and general attributes and skills for fast play and npc's and the detailed focus for the players, or important npc,
It's optional either way, it doesn't disrupt the system,
You want to specialise in Axes, so you can get an extra die when using one? Take a weapon specialisation Talent.
You want to specialise in rural prowling, take the relevant Talent giving a bonus to Stealth when in the countryside, rather than Stealth 2 (Rural 3).
But this option makes it very easy and simple to free up customisation and let the players have the skills they want without a massive list of talents, (and what if there isn't a talent they need?)
Keep the talents as talents, (not skills)