Wall Jumping & ban Stick
Can you? Yeah.
Will you? Unlikely.
Welcome to WvW -Anet style
I see nothing wrong with jumping walls and checking out areas for fun – but to use it to benefit, yeah, thats an issue. Outposts, etc… why not. Explore, get cool screenies, play hide and seek (Which is a blast!) But for chests? Nope. Bad bad.