One of the things that would really make WvW more fun to play is a mobile waypoint portal generator that is destroyable and revives on a timer base instead of the contested mechanic of current waypoints.
Commanders would benefit for having these at defensive strategy points for bigger epic defensive battles other than just SMC and Keeps, which both already have their own traditional waypoints.
Make is a golem speed or slightly slower. Can enter structures, and vulnerable to all forms of damage but immune to CC and heals. Need to be rebuilt if destroyed.