I'll grant you that the LCT archival response was weaker than the Taper version or for the one I did. I can definitely imagine it would have gotten a bigger reaction than....nothing (IIRC).
In Los Angeles the late and lovely Mark Blum was DHP's equal, I thought. And David Hull was a very sexy and funny Spike.
I seem to be in the minority that liked Weaver, but having read all the Durang one-acts in my youth with her voice in my head (knowing she'd come up with him), I think of her as the supreme Durang interpreter. I have always thought her vague and airy line readings highlighted the lunacy and amoral utterances of his characters.
And as you (or another in this thread) said, I think he is best lauded as a sketch writer. And that is meant to be a major complement.