i was hoping to seeing a clean and not messy prontera, but all npc are kinda in mess even you try to sort it out.. still i know how u trying to keep those thing sorted out.. from my opinion try relocated it on other map for example (go 18) or (go 3).. let prontera be a busy street people chat, vending + trading.. just keep around the basis npc (exp: healer + cart/peco/falcon + reset skill/stat npc)
personal request:
for those vending around prontera.. just keep off the road.. use left and right the sidewalk.. i'm prefer a neat look.. as i experience it on other server long gone b4 this.. trust me.. u will not regret the result doing this for a long term condition..
peace..