I love rock, and blues even more, but after 40 years of listening to it and 20 years of playing it, I'm a little bored. Big tone and sustain seems like a lot of empty calories... I've got Radiohead tickets for this summer, so maybe I'll be inspired....
I'm not sure that Jazz will ever get boring.
My repertoire fits on one hand too! Satin Doll, Blue Bossa, Green Dolphin, Blues. Does So What count? But I can play 2-5-1 in four inversions on five string groups. That's 60 chords! I've been running through those progression almost every day since October 15 --my birthday, when I decided to recommit to learning jazz guitar after a two year break.
Slowly, but surely, those grabs are starting to show up in my 5 song repertoire. The chords and melodies are starting to get played in all sorts of unexpected ways throughout five positions. Through repetition practice, the fretboard is really starting to open itself up to me. Slowly, surely.
Somewhere recently I read something like this: "Time is the ally of the jazz guitar student." I've got to think of time as my friend. And every skill or position that I truly internalize into muscle and ear memory (this takes a long time, thousands of reps) becomes exponentially powerful when I try to learn the next thing, the next tune or whaterver (I hope!)