Try champions of Regnum for an RvR open pvp mmo that actually gets an mmo "right"
I often see posts on reddit's /r/mmorpg which lament mmos still not being able to deliver good entertaining content. Like this post: https://old.reddit.com/r/MMORPG/comments/16g5wbz/so_many_mmos_get_things_right_but_none_seem_to/...