Some toughts:
1- Racial Benefits.In Step Two, it's not written any racial benefits. Did you include those in the "35 starting Advancement Points"? (1 Ability point, 1 choice of Focus, 1 language maybe and 3 point-buy advancement points on the table [per Set 2 rules]). If not, does this free-form system still adds those benefits
after the player spents the 35 starting points?
2- Talent degree requirementsYou could add extra requirements for each Talent degree (journeyman and master, to speak). I know someone posted something regarding this a while ago and I can't remember who was, but a simple suggestion could be to add +2 for each talent degree. So, Backstab would require DEX 2 at novice, 4 at journeyman and 6 at master.
I thought about this because in early level 3 someone could be master in one or more talents, so the player need to spread their Advancement Points through levels. Of course this would consequently affect specialization requirements, but i think 6 levels are more than enough time to get everything packed up.

And the only specialization who asks for too much is Assassin (because it need backstab at master degree)
3- Armor TrainingI loved the split! But I noted some issues after reading carefully:
- Light Armor Training gives shitty mail benefits compared to leather/unarmored benefits. (no dex penalty compared to +1speed/+2 defense)
- Heavy Armor Training gives small mail benefits compared to plate benefits. (no dex and +1 speed compared to +1 armor rating). Master degree applies to both mail and plate, but hey if you picked up master why the hell would you use mail? (more plate AR and half that to penetrating damage it's better than using that on mail).
So, I guess Light Armor Training could benefit unarmored/leather and Heavy Armor Training would apply to mail and plate. The more severed armor here is mail though, the light talent gives bonuses both to leather and unarmored on all degrees while the heavy talent gives bonuses to mail, in fact, only on the novice degree.
You could argue that someone speccing on heavy armor would use mail only as a temporary armor while he works to getting a plate, but I like to think heavy to the bulk warriors and mail to the mobile ones, like tempests and archers. Every soldier/city guard in middle ages, even tough archers, would use mail armors, even so because plate ones were too way expensive to spend on non-general or nobles.
LOL sorry if I'm being a little realistic in that armor thing, but this is not my goal (just a little

). The thing is: no one would use mail because the talents, as written, shout at my face "go use leather or plate, it's waaaay better"

and I'd like to see someone preferring mail over plate to get some mobility/survivability as a intermediate choice. (Just like skyrim tells you that a sword is faster but less damaging than an axe, who is the same to a mace, making a trio of choice)