> I've already made some comments about rewriting it and the response was basically "ok".
Do it.
Gradually.
Rename. Simplify. Reduce. Enhance. Test. Slice and dice.
Embrace the shitiness. Accept it. Own it.
It's your playground. Sharpen your skills, and lead them to the promised land.
It could be worse. You could face major resistance and people issues. Appreciate it.
This is an opportunity for you to kick a billion miles of ass...