Seriously, why do you care?
Because I made a suggestion, which I was pretty clear about, but you keep pushing "self-sponsored" magic and arguing because my suggestion doesn't fit your pet model. And, frankly, because you act like yours is the only opinion that matters. And make no mistake that it is
an opinion. Why do
you care?
I object to MOST of what Sponsored Magic does as a mechanism for specialization (as I've stated elsewhere but I will summarize one final time and then I am done explaining it).
* Sponsor debt. You disagree with my reasons but I've stated them pretty clearly. Without the outside agenda, this is literally just borrowing against future Fate Points. Sponsor debt has a catch to that borrowing that self-sponsored debt does not.
* Bonuses. There is already a way to bigger numbers. I think creating a class of powers specifically to circumvent the downsides of those methods is a bad idea.
* Evothaum. I'm marginally okay but gets overused and isn't terrifically useful for most things. I think for a lot of Thaumaturgy, this probably isn't even necessary. A 1-power-draw spell with materials at hand could take as little as a minute; which even in combat is not a huge chunk of time (in my opinion).
* Special abilities. And here's where the other big problem comes in. The book seems pretty clear on how extreme specialization should be modeled. You CAN do things like shapeshifting or worldwalking with spells, but if you want to do them with a snap of your finger (and not create a nuclear explosion while you're at it, in the case of shifting) then you take a dedicated power. Superior Pyromancy? Breath Weapon. Superior Worldwalking? Worldwalker. Same basic idea (obviously not comprehensive, as is), but no stress or magic rolls required; which is a huge benefit. And let me just point out if you tried to model shapeshifting with "self-sponsored" magic, you'd just be begging for a world of hurt.
* Cost. A lot of them should really only affect Thaumaturgy or Evocation but because people are modelling them after Sponsored Magic, they make it both and throw in Evothaum just because, ratcheting up the cost. On the reverse side of this, Sponsored Magic can only be used to further the sponsors agenda and the extra benefits only affect the sponsored magic, so adding these features to normal magic should probably cost a pretty hefty chunk more.
* Ambiguity. There's a lot of problems with using a model to represent something very different from what it originally represented but the biggest one here is that some of the way Sponsored Magic works is left ambiguous. When you base an entire model on a particular interpretation or on a 'by the way' and ignore a lot of the very specific 'this is how this works' (assuming its just flavoring, instead), you create a barrel of issues.