A cool thing to add the the tower watch would be a market place and shooting range. The market place could be a place where you can sell and buy armor and weapons from other places. The object you purchase would be down graded to it original layout so you would have to upgrade it. You could have the option to auction off a piece of exotic/legendary or any armor or weapons, or just a one time price to other placers. After that you could add a shooting range, this place could be on one of the many balcony edges where you can shoot targets, moving and stationary. This place would be an area were players can improve some of their skill with the cross-hairs. Also the target could have a health/life to represent enemy level and difficulties.