I think a solid "common sense" approach is best. Every single round, I asked if anyone was uncomfortable with their spacing. On the instances that people said "yes" I delayed turning Killshooter "Off" until they were happy. There is no minimum in my book, but if one person feels someone is "crowding" them, then the offender is too close.
Shadowing in itself is illegal in that it creates an unequal situation. If close proximity is dictated by numbers in the arena, players should make a "gentleman's agreement" with the pilots around them NOT TO ENGAGE each other initially so that no one is disadvantaged. I have done this on several occasions.
The whole KOTH ideology centers around the premise that "the best pilot should win". One unwritten part of that, is "under equal conditions/circumstances". If a pilot encroachs on another before the fight is actually on, then IMHO they are violating the foundational ethics of KOTH. Basically the pilot who knowingly violates another's "safe zone" is trying to gain an illegal edge.
Ultimately, from the CM's perspective, KOTH is about providing a 100% level playing field for all parties involved so that by the end of the night, the winner has established himself/herself as "the best pilot participating that night".
***KOTH is a game of skill, situational awareness, and honor. KOTH participants are "the knights at a joust" for Aces High. KOTH is NOT about winning, it's about being part of it!***
Our Wild Wednesday terrain is a bit restrictive, but the limited amount of space makes for more action and shorter rounds. Several weeks ago I requested that the terrain team develop a new, larger terrain for KOTH. It is supposed to done sometime this summer. It has a very unique theme, and with HTC's blessing, we will open some of the design aspects to the playing community. More details will follow as we get closer to finalizing our new terrain.
I'm really not sure if I answered your comments/questions, but I hope to have provided some insight into my vision of what KOTH truly is. Your interest, suggestions, and comments are always appreciated.
C U next KOTH!