As an upgrade user from MC12, I think you have a great opportunity to cover it all for HTPC. I just recently put together a fanless Hfx Box with TV, Blu-Ray, and Music (FLAC) coupled with my 52" LCDTV, MC15 is 90% of perfect for me. It definitely has the look to go with my modern Condo and I love what you've done with Theater View. You definitely have my vote for the aspect ratio change for displaying DVD Covers. HDTV support would be great too for displaying TV from my Clear QAM Card.
Thanks All,
J.