QUOTE(node21 @ Oct 17 2010, 05:28 AM)

It already does all of that. Hit "RB" when in the DLC scene to have it show you everything, instead of only what you have. Also, if you generate a report it will tell you what you have, what your missing, and what you have but wasn't found in the online scrape. And it will do this for every title for which you have at least one piece of DLC.
I currently show ~1600 songs in rock band 3 out of ~1900. xm360 seems to know nothing about rockband 2 as it shows no DLC for it yet there are tones of tracks. I have lots that show up as not in database but nothign mising even though I knwo I am missing some. as for rockband 1 I think I have everything but its hard to tell as alot of songs show in xm360 as "not Have" yet I do have and they work in rockband.
nothing in xm360 make sence for rockband DLC. everything else looks great. I know this is probubly not a priority as it only affects a small number of us collectors but I would love to see better rockband DLC support.