Chord surplus has never really been a problem for me. I love chords and am always searching for new ones. Digging through some old lessons, I found a bunch of altered voicings with flatted or sharped 5ths. They sounded good, but initially I didn’t know what to do with them! The reason they hadn’t become part of my vocabulary was because they didn’t sound very good on my guitar and were hard to play. That all changed with the GB-10! Unfortunately, applying them is tricky. Usually I play a dominant #5 chord before a minor 9th, but these are more difficult to visualize and finger than the basic”stack,” “stair” or “bucket” shapes I know. After a few hours of shedding last night, I was able to incorporate them into some V7+ -> i cadences, and then of course ii7b5->V7+ -> i progressions. I was able to visualize the new augmented chords by lowering the 5th which yeilds a familar dominant 7 shape. The fingering is completely different though so it’s going to require a bit more work. One really nice side-effect of this is that I gained a deeper understanding of the relationship between these and minor 7 b5 chords, and diminished chords. They follow each other very logically, like a V9 follows a m7. (There’s only a half-step between a diminished chord and a m7b5.) But you could substitute an augmented chord for diminished chord for greater variety — if your fingers are fast enough. This sounds just as naturally, since the augmented scale also has a b5. Like diminished chords, augemented chords can also be displaced from chord they’re resolving using different intervals. For example, I discovered that I can play (build) a chord a minor-third away from the root and it sounds good.