I do agree that the spontaneous end game could be a factor, but there are a few problems with the idea.
1. I've heard people propose a lot about hanging from the truss, but why would FIRST do that? Everyone would copy winning designs from 2013, and add scores to each team? I may not get it.
2. Others have said things about balancing the balls on top of the truss. A 2008 FIRST Overdrive copy. Again, why? To copy designs and incorporate them into modular robots? Again, I may not get it.
Having said this, there are many ideas to support an "unanticipated" end game.
1. "The truss is unnecessarily robust." We may have to glide along the truss, hanging, from one end to the other, with the assistance of alliance members. The only problem: 2 alliances can do that at once
2. The poles that sense the ball flying through the infinite plane above the truss, but also keep the ball in play, maybe unnecessary, but an endgame: like the minibots from Logomotion, but that seems unlikely and again, useless.
I do enjoy ideas of different end games, so keep them coming! I hope they do introduce one, despite my negative points xD