This is both a question and a suggestion. I am curious if there has been any news on whether spell crafting will always require Magicka to use. Since it involved the Mages Guild I have to make the assumption that it will. If that is so, then i have to make a few suggestions. I hope that some others here can come up with good ideas or possible explanations for how it will still be very useful for Stamina users. I simply am not sure if stamina users need even more of a reason to go over to the Magicka spells.
1) Make some of the spells you craft simply require stamina (I know this is highly unlikely)
2) Make sure some of the spells may require Magicka, but have them work similar to the Sorcerer pets. When you cast it, you lose X% of Magicka but you gain a benefit that will overlap with your Stamina skills. So sure, it still costs magicka to cast but overall it is useful for a Stamina build.
3) While we are crafting spells, allow us a way to change the resource that the spell will use.
4) While we are crafting spells, allow us the ability to change the spells to help with Stamina regen.
This all being said, I am extremely excited for spell crafting. I just hope that it is not a Magicka users dream while Stamina users will simply feel it is mediocre.