Couple other additions which only make sense to implement:
1. Able to use your Chocobo even though you are in Duty Finder. Seriously... why would popping him dump you from DF (or being in DF keep you come popping him)? Yes, he's a "party member" but he's also a temporary entity... basically a Pet. Pets do not keep people from entering DF... so... yea... There's no genuine reason to not allow this except lazy coding.
2. Bard speed song disengaging in combat or crossing a zone. There's no reason to having it completely disengage to the point where they have to recast the song. Just disable to speed but leave the buff active (unless they play another song of course or purposefully choose to disengage it). Speed song is no different than riding a mount. we dont have to re-engage mounts when we cross a zone... Yes, it's a nominal thing but still...