An increased chance to not get interrupted by a basic hit or weaponskill. There are plenty of stuns and silences on the other jobs to interrupt what they don't want hitting them (except healers?? Idk i don't have a healer to mess around on to see how Holy/Selene would work)

or reduce the overall cast time of each spell so they are harder to interrupt or preferably (once again biased) make them insta-cast (i want to triple flare a BRD in 8 seconds). I know the last one would be to broken but i can wish right >.>

Maybe increase speed of pets to they can have a chance of getting to running target

<Also Bard roommate here I believe you should make it so that you don't see the enemy caster on your target bar if they are casting on you if you are not focusing the target until something lands on you. I can't tell you how many times I'm just minding my own business and I'll suddenly see a Black Mage casting sleep at me and just turn around and destroy the poor fool.>