I did not see a "suggestions" board specifically, so I am posting this here.
I have been play testing Artist. As I understand it (though untested as yet), the background feat Artist counts toward the 20/day Bard song requirement of Song of Requiem.
It does not seem to influence the script for RoT Stormsinger requirements however. I have tested this up to the first three abilities. (Gust of Wind, Storm Strike and Call Lightning I believe).
The two mechanics seem to share the same thinking (preventing players from splashing bard to gain powerful abilities). Artist adds +3 'true' uses per day, much like Stormsinger and CL levels. So it stands to reason that the same should be true for Stormsong abilities.
I don't believe this would be OP, and I don't believe it would be terribly difficult to add to the requirements script. However, I must admit that although I have produced substantial scripts for NWN, but I have almost no experience with Obsidians NWN2 engine, so I might be quite wrong.
Anyway, just a thought, in case no one had noticed.
P.S. - Here is a link to the build I am testing this with, in case anyone is interested. http://nwn2db.com/build/?197591