I'd like to see more, but the classes that use them are limited. GLD, CNJ, and THM - and the latter two only occasionally use shields (Post 50 there's maybe one or two weapons total for each of those classes that are one-handed anyway - I don't know off the top of my head if THM has any).

And they're not prone to adding glamour 'weapon' slots.

...That said I'm with you.