[quote name='Maklershed']Could they just focus on cross game invites first?[/QUOTE]If you played a ton of PS3 online games (from various publishers), you'd see that might not be technically possible. The issue is, there are three different online setups on PS3:
-Invite system within a game, which isn't XMB supported (Burnout, NFS Carbon, CoD4, etc.)
-Server list or search for game with zero invites (Warhawk, Sega Rally Revo, etc.)
-XMB invites (Tekken 5: DR Online, Ridge Racer 7, etc.)
For the first list, a game would have to be patched and re-done to support cross-game invites. Due to invites being internally, the only way for it to work as a regular XMB invite is for the developers to patch the invite and change it to XMB style (or attach it to the regular invite). And with the way the CoD4 devs have supported the PS3 version since launch (no trophies, no rumble), it wouldn't happen.
For a server list, a game would have to be patched to support invites. Otherwise, you wouldn't be able to directly join a game. Sega Rally Revo isn't likely to get it since the developers are no longer owned by Sega (they now work for Codemasters).
XMB invites would work, because they are technically cross-game now (due to the XMB access in-game), but you still have to manually switch (but a firmware upgrade could make it cross-game).
There's also an issue of, whether you send someone an invite from CoD4, and whether it would successfully switch to someone playing Tekken 5: DR Online without a patch.
The main issue is, Sony could actually standardize it in the future for games (using the XMB invite system) and make a cross-game, but there would be a problem with it not working with older games unless patched (since they already have their own invite system or server list).
This is why I do not see cross-game invites coming soon. Since there was no standard originally, developers were allowed to be very open, but they may not work with one another.
With video chat on the other hand, Sony can easily have it overlap a game as long as it doesn't use up more than the memory reserved for the OS..
Personally, I could careless about cross-game invites. PS3 does allow me to do two nice features no other consoles does, and it has a button to eject discs with the controller (or function), and I can change PSN games/downloads inside game (without actually quitting to the XMB).