I am not the least bit interested in the Oriental Adventures / Kara Tur stuff - I didn't like it back in the day, and I don't like it now - but I know there is a significant number of players who are pretty keen on it, so that's cool.
News of Sentinel of Autumn and Winter articles coming at some point makes me happy though. I just would like that to be sooner rather than later.
Their answer for the Bladesinger makes sense, mechanically, even if it doesn't work fluff-wise. For the Fireball mix-up, there is the L7 Encounter of Fire Burst, which is very similar. Magic Missile also has a few spells that work similarly and are encounter powers, or if your DM wants to co-operate, you could get Corellon's Boon of Arcane Might. Or be Human and take the extra Wizard At-will (I think MM still qualifies?). Encounters-as-Dailies sounds weak, but I will reserve judgement until I see one being played or get a chance to use one myself.