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.
Spell points have been around since 2E (combat and tactics or spells and magic), so in essence they have been copying DND not the other way around.
Secondly, it's a pretty poor strawman, saying they it turns every caster into the warlock - as the casting mechanics is different. Also the warlock is not able to use the spellpoint system.
