I was wondering... Wizards get a ton of spell-like abilities that mimick spells from their chosen school (or generic vanilla spells for universalists) which is not bad, since it gives them some endurance firepower which is good vibes for groups that don't want to deal with the bother of going either rope trick or wand dependent or use other tricks that would be "cheesy" to the "casual" gamer.
I wonder if we shouldn't have something more like reserve feats (Complete Mage) rather than spell-like abilities or the mimicking of already existing spells in general.
Basically, reserve feats are supernatural abilites that produce an effect which is a kind of watered-down spell; like a burst of fire dealing 1d6 damage per spell level or short-distance teleportation, except they can be used at-will.
This allows a wizard to have some mean to contribute even when firing off a proper spell would be "overkill", thus giving technically unlimited endurance while not raising the power level in general (reserve feats aren't really scary at all, that's why they're at will).
It would make them look like better class features too, since extra spells are very nice but kind of "meh" on the variety.