I just wrote something in one of those typical IGDA forum entries where a passionate newbie asks how to get a game idea made and the veteran gives the typical "go away" response. I think I'll repeat it here...
The reason why the game industry is so devoid of original ideas is that even if you have gone to the trouble of getting a job in the industry and then working to build other peoples' games for awhile there still is no clear system for submitting a game idea. Also, the pace that you are moving at is the system's, not the passion's. In other words, someone on high has said that what is *really* significant isn't the idea or the passion, but your power-status within the system. That's a view that commoditizes creative output, and basically sucks the life out of it.
Say you did have an idea for a truly original game. By going through steps 1 and 2 whatever passion or originality you had will be long gone by the time you get around to submitting it.
The game industry needs a true submission process, with the ability to actually sell design documents outright. It needs a scouting process which says if you have a passionate idea we want to see it now, but we will realistically weed out all the chaff that is going to come through this channel.