"A good path"? That implies that other paths are "bad paths". Maybe I've been spending too much time outside the PbP thread, but I'm not going to accept that.
Or, by "good path," do you mean "career objectives"? If so, cool!
But yeah, the rules are scaffolding, not a cage. We've already got house rules for other things - fumbles, interpretation of some of the stunts, etc, so I don't have a problem with opening avenues that will let you build your character the way you want. So far, all of the fine-tuning we've done has been to expand the framework for roleplaying reasons. This is just adding a little more detail to the blueprints.
The way talents work, they aren't available until third level. That isn't to say that you can't use limited forms of the ability, even at first level, but the functionality may be limited. For example, Laurelin's specialization, shapechanger, would ordinarily allow her to change into a 3rd level-comparable animal at Novice rank and a 5th level-comparable animal at Journeyman rank. She can shapechange now if she wants, but she won't be able to transform into anything with combat abilities. But there are applications for that. She might be able to change into a ferret, for example, and sneak into places where an elf wouldn't fit.
For Spirit Healer, I would say that Novice level allows you to add your magic to your Heal die roll twice (spirit assistance!) and perhaps access to two spells: Rejuvenation(Mana Cost:1-3, TN?, success restores 1d6+1 mana for every mana point spent) and Revive(Mana Cost 6, TN?, success enables the caster to bring back a dying comrade whose timer expired up to 2+Recipient's Magic rounds ago). I'm thinking that a failed roll when using Spirit Healer talents might have the potential of dire consequences, i.e. a chance that something will come out of the Fade.
Note that all specialization talents would replace the talent you would ordinarily take at that level. So you could not take Shapechanger or Spirit Healer and a different mage talent that level, just one or the other.
Edit: And the new spells would replace the new spell you would ordinarily learn at that level, so you could not learn Rejuvenation plus Shock.