[lightspark]

Mine might not be a good example of LAB usage because I'm still migrating to it and code needs to be adjusted, I used to re-use Blizz buttons.

But from my experience so far LAB is missing only one thing: a new 735 feature that allows you to right-click an action button to toggle pet action's autocasting if it's placed on your action bar. But that's Blizz forgetting about us, addon devs, once again, it's not a part of secenv, so nothing can be done atm >_>

Other than that, it's fine. It's not that customisable by default, but it's a lib, so you can edit its code w/o any issues. That's what I did.

Benefits of using LAB are quite nice, the most important, at least for me, is that you don't need to dance around default buttons' OnUpdate and OnEvent handlers, like each button has its own o_O LAB uses a better approach, so it may actually be a performance gain. And, once again, because it's a lib, you can alter it w/o breaking anything.