Quote Originally Posted by Arrius View Post
In overall it's a 15%-25% reduction in overall DPS (AoE rotations being the biggest loss) you can do with the class if you rely on the Single Button Assistant. And that doesn't cover offensive/defensive cooldowns and trinket usages.
It also increases the global cooldown by +25% and is somewhat broken on longer channeled abilities.

Just to toss in the full story here.
On the other hand from what I've heard the autoglowy button alternative they added doesn't affect the GCD recast or anything and highlights the next button for you, which is quite a bit more than just highlighting the procs or the next combo steps or what's generally available to you at any time in XIV.