[maroonblazer]

>The rough part of this is that you can get so good at being the fixer that this becomes all you (ie. maybe you’re not working on new features, etc) which can suck.

This is where a good manager makes a difference. They're also interested in your professional development. They should recognize the valuable work you're doing, have you train new(er) hires and move you into more senior positions, more interesting work, or both, whichever you prefer.