I would do the same if I weren't afraid of coming off as passive-aggressive given that I voiced my opinions in the past but received a reply in the vein of: "We're aware that this old code is really bad, but with our constrained resources we need to prioritize keeping this boat afloat.".
I keep mine locally. I have the PlainTasks[0] package installed for Sublime Text. It's a plaintext file with a bit of TODO functionality baked in. When I find something, I note the commit, the line (or block), and why I want to fix it. I try to slightly estimate high enough that I could throw some fixes in for the sprint.
To completely and hyperbolically torture this metaphor, as long as you whip the galley slaves to row fast enough so that you can jump to safety on "Short Term Stock Gain" Island, you'll be fine.