It's a mod in the same sense that CounterStrike: Source, Day of Defeat: Source, and Team Fortress 2 are mods.
Yeah, they're modifications of the Source engine...but they're full-on games and should be accepted as so. We stick the "mod" title on less professional games usually. They can all be fun, but it's getting a retail release, which something like HL2: Dodgeball won't be seeing hehe.
And for PC/360, I agree. This game doesn't seem like it'd cater well to 360 gamers against PC gamers. But I wouldn't mind trying...they could dedicate some servers to cross-platform games, why not? You could choose to play against 360 gamers once in a while...if the 360 gamers had some auto-aim help, it could be balanced.
LEFT4DEAD411.COM
Bet with disolitude: Left4Dead will have a higher Metacritic rating than Project Origin, 3 months after the second game's release. (hasn't been 3 months but it looks like I won :-p )