To me training reads like practise, and specilisation as a directed education. As such I see;
Training: as the 'comfort factor' gained by performing similar actions time and time again.
Specialisation: as the 'dedication' one puts into a specific skill or ability.
With this in mind I have been thinking about transposing the Expertise dice acquired through training with the fortune dice gained through specialisation in a skill. You may be a well rounded athlete (gaining a fortune dice for all strength based checks) but you have been practicing with a sword for example for years and therefore gain the expertise dice in Weapon Skill checks using a sword.
I know that this will limit characters, but it is in keeping with training and specialisation.
With regards to the NPC A/C/E values I would propose that for the cost of one E point a NPC could add a Fortune dice, or at a cost of two E points could add an expertise dice.
I realise that this has not been fully thought through, but was wanting some feedback, before developiong this theory further.
What do you ladies and gentlemen think about this concept.
Thanks for any feedback,
Alp