Would it be possible to modify spells until they're considered by a GM? It may be less of a problem once the game gets going, but in my spell submission frenzy I've made a mistake or two. Not a big issue, but means you have to reject my spell and I have to rework it later rather than me just fixing the mistake.
Could cause a race condition if someone evaluates it at the same time as I fix the mistake, but that should be solvable.