I don't care about web enabled features on either format, like a couple years from now all this stuff will still be supported anyway, or anyone will even care then. Especially when the Internet is so freakin' influential and everywhere. It's not like we can't do 98% of what web-enabed HDM can do countless other places quicker and easier being on a PC on the actual Internet.
Blogs? Forums? Buyin' shit? Hell, I'm doing all that now in mere seconds.
Include it all on the disc or not at all.
Though a downloadable subtitle database would be
FAR more useful than practically anything else they could come up with. God forbid they provide that though.