Not a fan. End zone isn't supposed to be complicated, I prefer just gold or purple or simply grass along the edges.
The more random stuff you start putting in there the more distracting it will be from the game. Football isn't a game where you need entertainment surrounding it, or graphics or anything. A simple game.
Also I really think the Eye is unique and don't need to fix what ain't broke.
We could put a shock collar on him with those invisible boundaries so he stays in there.
I'd like to see how big a shock collar you'd need to keep a tiger from getting away.