I'm not suggesting to solve them immediately, I was merely stating even the smallest temporary solution will stay around for longer than expected at that time.

I'm not suggesting to solve them immediately, I was merely stating even the smallest temporary solution will stay around for longer than expected at that time. Instead of leaving only a todo (issue tracking) in code, leave a decent context in code so it is not lost no matter what issue tracking system is used. Using codebase as issue tracking is fine as well. But issues will get forgotten or become irrelevant. Having just todo's with no context (ticket was removed from old issue tracking, issue was never tracked) just creates legacy code which is hard to refactor or delete without proper time investment.