So, let me start by saying i really like the first run at pvp (bomberman). Its a minigame where everyone is treated equal and new players and old players get to do something besides fights dungeons all day. (keep the bomberman its awesome). (also keep the maps random it makes variety)

Now i have 2 suggestions 1 is a pvp method and a whole new system.. dueling :D

So for the pvp method:

There is usually always an issue of who has the best weapons and uvs being the winner. This can be easily fixed by allowing some strategy to be thrown in.

My suggestion... A percentage reduction on damage. This way its not a whoever gets the first hit wins kinda thing. It lets u survive a few hits before dying and then u can get team mates to help.

So lets say u have a DA and if u hit someone it takes out like 3/4 of there health, 2 swings and there dead. Instead make it so it takes like 1/6 of there health and they can survive a few more hits. This way there is a bit of an actual fight going on there.

And... DUELING :D

So imagine in haven/arcade/bazaar/ anywhere!
You can right click someone and request them for a duel. And bam the weapons come out and u have an audience! This can let guilds host there own little pvp tournaments and other people start hosting there own little events anywhere.

Basically pvp would just be u got access to all ur weapons and a damage percentage reduction. And u fight in town. this would be a nice way to settle little grudges and develope nice rivalries.

and then every character would develope a duel (win/lose) ratio.

Well this is just a rough sketch but i wonder wut yall think. It also lets people show off weapons, and how they work.