Having only one interact key in the game is often a problem in WvW. For example, if there’s a defeated NPC near a bally I’m forced to res the ally rather than use the bally. Yeah I can double click or right click the bally instead, but this is PvP and there’s only so many things you can do with a mouse at one time. And the solution is easy.
Loot/Revive or Res/Use Siege/Build Siege/Repair Structure….
Sort it out ANet. This isn’t a console game, we’re not realistically limited by the number of keys we have at our disposal.