I can see leaving off Succor in normal content. If everyone is doing their job (i.e.dodging AOEs and watching their hate so they don't pull mob off tank), the effect is wasted in most cases. Unavoidable damage is very rare in 4-man content, and at best uncommon in 8-man or 24-man stuff. I agree on Adlo. There's not really a good reason not to use it often. Cure + Stoneskin in 1 cast for less MP than casting both, that also happens to be faster than SS is just at the border of being overpowered.