I think the sup spam rule is too vague, and people love to abuse vague rules to get forfeit wins and give admins headaches. I'd change it to say something like this:
Explosives on supplier are forbidden at all times.
No camping the enemy sup from long range.
No team should have 2 or more players persistently spamming the sup.
I feel like that's fair, simple, and straight-forward.
--- Updated ---
Also are we really not going to use auto-pause? People hated powerplay last season, there was lots of wawa anytime somebody dropped. I might have missed it but is auto-pause not compatible with this siege version? I think auto-pause would save us some annoyance from people..