I've been dreaming forever about writing a debugger that basically just produces a timeline/log (branching in the case of threads or processes) of program execution, you can drill down the stack or into a loop at any point, and surfaces the trace of your code as opposed to 17 layers of library indirection.
I mentioned this in a different thread, but I'd recommend you take a look at Pernosco, a debugging tool written by the original author of rr: https://pernos.co/about/callees/
