full of questions today

[potestas]

changelings if they start with the wizard package and a few fey powers thee pretty much over the top right away. Can we separate out the wizard powers  from fey powers and when they reach -10 fey powers they have made the choice.

[Sanctaphrax]

What exactly are you worried about?

Adding the Changeling template to a Wizard (or vice versa) doesn't seem particularly unfair to me...

[potestas]

not unfair, but quickly over the top for the player wizard template already puts you at -7 a couple of weak fey powers and he on the side of the monsters more or less

[Nepene]

They can generally abandon their magic and their changling nature, if they prefer to focus on different areas.

Although a fae nature could be very useful for a wizard. Superhuman toughness plus an iron weakness means 4 extra physical stress slots, enough to take a serious beating or to augment a lot of spells, at a 1 refresh cost.

[Sanctaphrax]

It's an inherently Refresh-hungry concept. If you want to go for it, it might be a good idea to play above Submerged.