Even in theory it doesn't sound fun though...using a PS3 controller to watch a live press release is not how I want to spend my time...I want to spend my console time playing games, not sitting in lobbies.
And also, I don't see how this would appeal to "casual gamers." I wouldn't think the casual gamer would want to spend that much time sitting in front of the tv doing nothing...they'd get bored.
I think it could be a lot of fun. I'd much rather be in the room of a press conference before I watch it on youtube. Being able to show live demos on home would be nice, but I don't know if they will support that anyway.
As for being a a game lobby...I learned to type playing Diablo 1 on battle.net because I joined a clan and had to learn to type faster to communicate with people. A lot of people ended up hardly ever playing games just chatting and recruiting other people. Having a persistance place to meet is a great way to communicate, and that press conference demonstrating home specifically mention clans. THAT is a huge MMO feature and that's a great thing to add. I know resistance had clans but actually having a place where everyone could go and meet up outside the game is a great idea. It helps keep everyone connected.
Believe it or not, chat rooms are very popular. Virtual worlds that serve as trophy rooms, movie theaters, demo watching, and clan meetings are even better, to me.
Also, I want to point out again, in response to shams, that if you don't want to walk around the world there is a menu that easily gets you to where you want to go. If you are looking at the PS3 menu, I'm sure there will be an option to go straight to the trophy room or whatever. What I'd like to see is PSP features worked in instead of just a PSP menu.
PS to shams: Oblivion, while giving player the option to do a lot of things, has a set of quests that are very linear if you just want to follow the storyline. I know games like these get reputations for being very non-linear but in the end there is only so much you can do and usually there is always a linear storyline. Zelda allows exploration, as do Final Fantasy games, where you can unlock secrets and complete sidequests. The only difference with Oblivion is that those side quests take a little longer. As far as I know it doesn't change the main storyline, but I can't confirm that yet as I haven't completed it. I don't know why having more optional things to do in a game would ever be a bad thing, though. (Sorry for the long PS).