Table of Contents List Styling Options (not just bullet points)

I'd like the ability to style the list in a table of contents block in a variety of ways like most TOC plugins do. The current setup with only bullet points is not visually appealing. Could you give us the option to choose between numbers, bullets, nothing (only indenting with each additional H level), etc? I find having nothing but indentations to be the most flexible since my headers might already have numbers in them, and if that's the case, they look really unprofessional in a bullet point list. Please give us styling options for the list!