Suggestion about lvl 45 Guildquests

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 :p