Mike Sullivan said:
But what about my buff-based Ranger (Archer)/Sorcerer, who uses mobility spells and buffing spells to get into good sniping positions and then chills there? Or my reach-based Fighter/Wizard, who wants to stand behind the lines in a fairly large party and use a reach weapon to contribute to melee, and then use his Wizard spells entirely to increase his out-of-combat role? Or an unarmed Monk/Wizard (which, yes, I understand that the EK will probably not provide for) who is really uninterested in using a weapon to channel spells/replace material components, or getting an ASF reduction? What about the Fighter/Rogue/Wizard who wants to use Wizard abilities to selectively enhance either his Fighter or Rogue role on a given day?
All of those are only helped by giving the eldrich knight ASF reduction. You then have the option to wear some armors without penalty. It opens up options. You are arguing for narrower options. You are limiting the class options and flavor.
Your ranger is probably going to want to use his spells for mobility, not replacing his armor. Buff spell durations are much lower now. Your reach characer wants to be at least a passable element of a fight. But you will have to spend half your spells just to be ready for combat. If your monk dosn't want the armor, it is his choice, you don't NEED to wear it.
Another idea to give the class flavor without forcing them into some role is craft wand. Wands don't have ASF, so they can be used like secondary (or primary) weapons in combat. Flavor without limiting. You don't have to make wands, by you could.
Hell, even giving a bonus feat of any metamagic, item creation, or fighter feat would more interesting. Still wide open, opening more options in fact, but not as boring.