
Regarding the "2 poles"... Rather than having 2 live activable poles (which would be always op for the attacker in any way my brain can see it) I would add a "pole selector"
Let me explain:
At the begining of the round, the attacker chooses between 2 poles A or B. After the round has started (about 20-25 secs later) and technically every defender is set in his defensive spot, the defenders get a message "AttackerX has selected pole A" (or B or λ). So defenders have to reorganize themselves to defend λ pole in the remaining round time

I hopez you understood. I see it way too radical gameplay tweaking at this stage
