I'll state a quick overview of my thoughts of pots, but I'm no PVP master so take my words with a grain of salt if you'd like.
There are two different types of PVP on our server, in my opinion. Raw PVP and skilled PVP.
Raw PVP is like the wild. You do whatever you can do to live, gather materials and train yourself. You're not looking to do anything fancy, to make good plays. You're simply looking to survive. It's raw pvp. Do what you can do to kill the other person. no matter what.
Skilled PVP is like gyms/elite. We don't want just anyone to be able to be in the elite, it should take talent. I want to see some cool ass fights in the gyms/elites and see true talent being displayed. Maybe not the most practical PVP but something that requires skill, strategy and maneuver to outsmart your opponent because they are a skilled PVPer.
How does this relate to pots? Pots are very raw PVP. It does not take a genius to throws/make pots. It does not take a genius to dodge them. It promotes a very boring and raw PVP style that I personally do not want in the elite. Training your sword stats and using enderpearls and dogs and more all takes some strategy and dedication to defeat. There is no fun counterplay or intuition to pots. That's why I don't like them in the elite, personally.