Personally, I feel the menu that opens to select a pheromone to emit is a hindrance at points. Sometimes you get jumped from someone rushing you and need to quickly switch to warding, but you don't want to hold still long enough for it, or maybe you are dragging a runner to safety and want to emit recovery so they can run away by themselves, but again do not want to stop moving to do so.
To change this I thought it would be interesting and useful to have a button for each pheromone much as you do for orders when you play as a marine leader, but I want to hear what you all have to say about it as well.