Thanks for adressing the main topic, unlike the other posters who derailed and brought their own "topic-of-the-week" into whatever post was active.
As I understood your post, you think its a bad idea to have all 3 parrings open at the same because then people would bring the main fight to the deemed best zone, and the zones which were deemed the worst would never see trafic? If i understood you correctly, then we agree on the main argument for my case, that not all zones are equal and some of them are really bad for the "main fight" but serve fine as a Boxrunning / smallerscale map. Eatain for example have some of the worst heatmaps when its the main open zone, but when its just smallerscale there will be better spread out action on more of the map.
I argued that more options are better as the playerbase would then pick whichever zone is more fun for their scale, mostly warbands would go empire and fight there or T2 / T3 zones as they seem supperior than the Elf/dwarf T4 zones. But with more options comes more choices, we just seem to disagree if this is a net possitive or negative for the game.
If people want citysiege opening talks they can make a forum topic for that, only reason i mentioned forts is because the two parring system needed an open fortress for attackers to run to the gate of the enemy city to queue up. Something that has since then been granted a teleport option to and therefor I argue that we dont need a system where we are restricting to two out of three parrings open at the same time as this main reason have been solved with the teleport option.