Where is the fun
It's just there, for some of us. It's not for everyone, I understand that, just as siege is not for every battle player and how battle is not for every siege player. My clan and MOST of (eu) players that frequest DTV play it because they enjoy it. Sure, we enjoy the bigger rewards, and sure, there are many grinders since the increase, and that is sad for other servers, but I can't say that I'm complaining, as long as they actually play and not just fuck around/leech in shieldwalls/hide somewhere.
I don't play to compete, I like the sound of blade hitting a body, I like the blood that appears on characters, it appeases me. That's what is fun for me. Also you don't have to be as serious as on other gamemodes
Fun is everywhere, look at Krems and their "typical" session of fun, it's all arbitrary ¯\_(ツ)_/¯