I also agree that party buffs shouldn't be usable in this zone.
being an open area for pvp is great, and it creates tactics to not let your enemies enter if you don't plan to enter either (due to guards attacking skulled players).
But yes, it's a shame people abuse party buffers to just summon & kill in front of it. It's pretty irrelevant.
It would also force people to play the "same way" as in ancient due to no party buffs, but on a wider area. Which could/should be funny too.