Furt, I sir, am seriously impressed!!!!
Excellent idea, properly planed, and exquisitely executed, no pun intended.
The half arena is actually perfect. I don’t know your rules but am really looking forward to checking them out. In other rules we played we had only 2-4 players so easy access to the arena is a must. The front being open the players can congregate in front to play and sufficiently badger and harass each other. My 2 young sons loved the Gladiator games my friend and club mate had ran here in Fort Lauderdale Florida. I bought some figs and animals to run and play, but alas it was another wayward project as the arena seemed too much with everything else I am working on.
Where are your rules available from?
Cheers,
Sgt Guinness