Well, this is likely a shot in the dark due to some of the past posts (ie 4 channel radios and such), but we are all just guessing
So I went with the 3 theme, and I liked the red+blue=purple, and that it is a baseball hint.... so here goes:
There are 3 alliances on the field. (between pi, you & me = 3, triple plays = 3) etc.
The field is 6 sided (amythst 6 sided crystals)
The scoring objects are baseballs (John & George)
The center is a pyramid (cleveland rock & roll hall of fame, amythst, etc)
The alliance partners are broken up and CANNOT work together other than to score/defend (unassisted!)
And the pyramid is made of plexiglass (amythst glasses) with the top center of it out (I know that goes back to the old rumor, but there has to be somewhere to score!)
Check out the drawing I made