That Dune thing got me curious, I've tried the 2.0 Dune and it performed terrible here (BD's with high bitrate from NAS where stuttering and it did not support a html interface like UMC or YAMJ. Which player do you own and does it play all BD's and does it support LPCM? And what do you use to show cover art?

And building something on top of the xbmc database should be possible aswell, it's a SQLite database.

I would wait until giving away that ION, XBMC 10.xx is only a few weeks away (probably 8).