You also keep duskblade free quicken spell and, most of all, arcane channeling.
Yes, maho-tsukai list is kinda "narrow" for a full caster.
I saw that the class has no class features besides spellcasting, after level 1.
So it seems that, just form an optimizer point of view, best choice for a maho-tsukai is gaining it at a1 level dip in a build with strong class features.
lightning warrior... but that class is WEAK! C'mon: it lacks a familiar and can’t specialize in a school of magic! Just in a group with a truenamer and a samurai it "may" be ok