Well we know there are drones of some sort, and they seems to be connected to our utilities. ANet also have this strange tendancy to fill holes, just remember how the revenant is a heavy armor proffesion in order to have 3 of each type, and how they were about to have no weapon swapp just because they wanted one in eash armor type to have this handicap.
So it would be no surprise to me if they wanted to give engineer signets (currently every proffesion besides Engineer and Revenant have signets, and signet icons was data mined for the revenant elite spec).
It is also quite possible that their passive is the drone flying around you doing their passive thing, and the active is sending your drone to a target location or target enemy to blow up for an effect.
This way, our “signets” (if they even call them that) would follow the engineer theme of making everything a bit more complicated than on other classes. Our healing drone might fly around us using the Med-kit auto-attack heal towards us, healing allies nearby as well. Thus beeing weaker than Warrior healing signet, but having the bonus of healing in an AoE.
Maybe we get a Spy drone that we can send to a location and using the new camera-disconnection-from-the-player technology, we can spy from our drones view. (no idea why we would ever need to unless we can put them at some WvW gates when scouting).
If it is the case, we might see some powerfull signet traits that charge up two drones for each signet and lets us activate them twise or maybe we get something like “writen in stone” where the drone survives the effect and comes flying back to us.
So do I want this… Maybe, depends entierly on the toolbelt functions, cooldowns and general active effects. Thematicly it fits and it would look cool. I just hope they are untargetable and invulerable while passive (like a spell effect instead of an actual minion)
