Figure I\'ll put my thoughts on this.. so...
I\'ve seen a mix of magic systems, one of the more intreguing ones (at least I thought so) was Dungeon Master II: Legend of Skullkeep... for the many who probably don\'t know that game:
The system consisted of a number of runes/commands the player would combine on thier own. The interesting bit of this was that the player had to discover/create all the spells themselves. In the book the runes were detailed and described, so it was a very logical system.
An example spell would be like so:
(I can\'t recall the names, so I\'ll describe the rune

)
1st - Any power rune (basicly the power of the spell from 1 - 9)
2nd - Poison rune
3rd - Wind rune
This spell compsed a bolt of poison that would fly along it\'s path, and upon striking something, would burst into a poison cloud.
Anyway, I loved this rune system and PS\'s glyph\'s sound very similar. The only problem I had with the DM runes, was one had to write the spell combination manually, or memorize them in RL
So maybe once a spell is \'discovered\' by the charactor, it could be saved in the spellbook.
One last note, please, please don\'t use the D&D spell memorization system. As much as I like D&D, I much prefer magic points used for all spells.