Its an interesting mechanic, but If we have a game where you could have magic mechanics different from other games I am not really into turning it into a "same as always" mana mechanics like any RPG-MMORPG in existence. (Because basically that´s what spellpoints is, the mainstream "I use my pool of mana/magicka/energy to cast my spells")

Also that would be like turning any caster into a Warlock, and I´m not really a fan of spells or mechanics that could make an entire class pointless. I like that any class could be unique and offer different ways of playing to the gamer.