^ That's because most MMOs are bad games with seriously, honestly, horrible features.
Portal gun lol... Maybe as an environmental weapon...?
Anyway, another cool thing would be commander mode for WvW. Stolen from the Battlefield games... I think. Anyway, the commander (chosen either randomly, or voted, or I dunno. later problem) would play as a normal participant, but could also bring up a map and plant flags on said map. These flags would appear as actual flags on the battlefield, visible only to that team, and could be used to coordinate tactics etc.
Depending on map, there could also be other effects. Like maybe there's a map set in the mountains and there's a gryphon nest, and if you capture it, your team's commander will have the power to summon a gryphon once per I dunno, five minutes. The gryphon would stay and fight on your side for one minute.
And similar stuff.