Yes thanks, I intend to in the future; however fact is you can't just 'implement' something. It's not like pouring some water into a cup. It actually takes some time and thinking. Rather than rushing into implementing things, I'd rather make it so that my current source remains stable, and bug-free. Once that's acheived something else will be added etc.
As for PK Arena and Jail, these maps can be accessed quite easily using the following commands (not sure why, but jc, otherwise known as Job Centre became a Pk Hot-spot):
@mm 1005 50 50 - PK Arena
@mm 6000 100 100 - Jail