Plus it would allow for a magic item to give the benefit of casting magic only ever depleting 1 magic point. This might make it very exciting to find such an item.
Viewing post in Clarifications and Magic Change comments
Hello!
One of the great things about systems like this is it is very easy to add home rules to make the game your own. You can easily bring back the increasing cost for more difficult spells. I personally would max out the cost at 3 maybe 4.
Interesting idea on an item that reduces the cost! Sounds like a great find for a magic user or cleric.