Adding formatting options to WP 2 ‘Insert/edit image’ popup

Sounds good.

I’d love to find a way to make linked images appear in a lightbox style (https://www.huddletogether.com/projects/lightbox/)

Might not be too hard to hack this I guess…

@christian – check this tutorial out: https://www.tamba2.org.uk/wordpress/quicktags/

It doesn’t directly address your question, but shows how you can add quicktags (the little buttons above the editor). Should get you started towards adding your own img tag perhaps.