I love the sound of a, good jazz guitar. I could melt, listening to Joe Pass. Herb Ellis backing up Oscar Peterson, with those little 'punches' and......stuff Even Charlie Christian, (if a guitar was ever going to be useless, it'd be with Goodmans band) I really like the variety a guitar brings to a big band. It breaks up the 'parade of horns' nicely. And the tone, nothing else sounds like it. Especially in a small ensemble, working nicely with the harmony.....(ooo, I'm gettin' all squishy.......and I haven't even gotten to the solo yet)
Tuck & Patty, not strictly jazz material -(or is that 'strickly' ) but I love the way a guitar pulls off the chord-melody work.
All that said, I really don't like to hear too much guitar. Extended solos, or even a cd like The Great Guitars, (Ellis, Kessel, Byrd). I like a variety of instrumentation to break things up. Otherwise I get bored with it.
All a matter of taste, I guess. If you honestly find the guitar to be a redundant, or ill-suited instrument for jazz, maybe you should consider trying out a new instrument. It's not as though you have to give up guitar.
How do you feel about violin ? (ala Grappelli / Reinhardt)