Personally, I hope they change a lot of the abilities depending on Job.
For Bard, I'd hope to see Raging Strikes and Misery's End turned into Songs, a HP recovery Song and something else. Bloodletter should restore MP while on Bard, giving you a way to keep Songs up for longer. Barrage would be nice if it allowed you to play two Songs (three with the trait) at once. That way the Job would definitely feel more like Bard, assuming the songs are even useful. Ranger can work mostly as Archer does currently, just change Swiftsong to something which combos off Heavy Shot, to allow one of its Job Abilities to combo off that.
Main boost I'm still waiting for on Bard is the ability to see my goddamned Monk and Warriors TP in the party list. I have absolutely no idea why we're still stuck with XIs archaic lack of a TP meter for party members...