Not much around yew gate or anything like that. PVP is generally at champ spawns and harrowers (IDOCS too, I'd assume been a while for me). You'll usually see a people in groups of 3 or more or none at all. I still find Pacific enjoyable but enjoy other aspects of the game entertaining.
My opinion.... If you're yearning for the hack and slash yew gate days, then Atlantic seems like the place. It seems like many PVP'ers switch between their home shards, shards they had visited and Atlantic depending on their mood or what scenery they desire.
Depending on your personality Siege can also be fun, or at the very least a different experience. There is something about seeing a PK'er going into a hunting area that still makes me feel like I'm playing the UO of old. The game play on Siege has many differences (insurance, gates, etc) and it is a complete culture shock compared to any other shard.