Periodic PVP announcements and and @.showpvp command to turn off announcements
Similar to how we have the @.showlogin command, implement a announcement that announces there are x people in PVP whenever more than 1 person is in PVP for more than 1 minute.
Some save spots do not have the PVP cat which makes PVP less accessible so people will not be able to know that there are people in PVP, or are just lazy to click the cat since it might just be 2 people dueling.
I believe that there will be more interest in PVP there were announcements like "There are 5 in PVP right now". People attract people. Those that are not interested can simply turn off the announcements with @.showpvp
If possible, don't count the same master accounts as some people might just be testing damage or abusing the infinitus tree to reset their SN.