I'm not sure if there's an addon for this already, but I'd love an addon which lets you choose about 10 different addon presets you've made (like the Brick Cart.) This'd be useful as I could just run a server by clicking an addon favourite, typing in the name and all those goodies. (Basically, there'd be a Pick Fav button on the custom addon list and you'd just click a number to save the list of addons you're using.)
Please, link here if this has already been made, and if not then it'd be nice for you to create it.