I don't know if anyone would support this but I would like to suggest an extra lvl 45 guildquest for some class skills which would benefit some classes with some weaknesses at the moment
As everyone noticed the corresponding guild of a class gives at lvl 15 and lvl 30 a quest with a skill as a reward.
Although I like to see more cross class skills available for all the classes as they announced in the last Live-Letter I think they do it the wrong way.
When too many skill can be accessed through the ability of the cross class system the individuality of each class/job would be kind of destroyed
Any new class which will be implented in the future isn't taken into consideration