Quote Originally Posted by Ping
problem is, that you can not trigger spells over LUA anymore (if i remember right)
Whoa? Of course you can. How are all these addons doing it otherwise. The issue is automatic/dynamic targeting with addons.

Addons cannot set focus automatically (for example an addon couldnt set your focus to the least healthy character) and then you just '/cast [target=focus,exists] heal. This would be the 'decursive nerf'

That said addons can, using secure templates, and some preconfiguring do quite a big of the heavy lifting they could before 2.0. Such as preallocating UI elements to characters (like how decursive does for each player, pet, focus, and target ... each has a box preprogrammed and you just need to right/left click the box)