This is a good module, but it really lacks maintenance. That said, I have a request:
I personally think that colorbox is a bad lightbox alternative when it comes to customizing. Much better are fancybox and shadowbox, in my opinion. Now, I know that not everybody will agree with this, so I propose that we should make a dependency-like thing, just as WYSIWYG. This is an alternative text-editor which allows you to type as if it were in Word, but the beauty of it is that you can choose which editor you want to use (ex. tinyMCE)
Maybe we could have it like that: you install media gallery, but you can't use it until you have installed a lightbox (ex. lightbox, colorbox, shadowbox, fancybox) and then you can use that one, if possible with its own presets and features.