With MP being introduced I think it takes away from being an elf in some aspects. Magic is no longer a unique advantage to certain races in the same way if MP can be purchased. Use to, casters were a political and strategic advantage to wars. Maybe I havent wrapped my head around the total affects of MP being availabke in market to all kingdoms, but a elven self spell could help to set market rates and maintain some political standing for casters.
I suggest a spell that is similar to the old iron to gold spell, a way to generate income without expending resources. Maybe if the resources that were created with this spell went into an arcanum vault and could not be used in market or to send aid.
Something to help balance the amount of schools needed to cast (it seems wayyyy more difficult to maintain spells than rounds 3-9). With the need of markets for gold production actually working, that makes eleven builds a lot tougher to maintain.
Let's be honest, even with free iron to gold, elves were never absolute power house in strength.