In reading all these comments about the relative ineffectiveness of shields in D&D, I was reminded of the fact that, when Dexterity adjustments to armor class were first introduced in Greyhawk, they were limited to fighting men. I've long liked that limitation, since it provides a small but useful boost to fighters. So, I thought: what if, instead of Dexterity, characters could add their Strength bonus to their AC when using a shield?
Obviously, in such a case, I'd eliminate the Dex-based bonus to AC entirely and replace it with a Strength bonus when a shield is used. Is this idea at all helpful, even as an idea seed, or is it just completely without merit? Feel free to say so if it is, because I only just came up with it after a few seconds thoughts, so odds are that it is useless.