Sucks even more than the engine drops from the hardest STF that nobody ever wants to actually listen to advice on how to win.
I've had luck in CSE bringing the escorts to play and max DPSing everything, or science ships to do mass repulsion and gravity welling. One has to win the map to have the chance at winning the Prototype Engine anyway, otherwise it's a 1 hour wait for nothing.
Cruisers will probably take a longer time to get the Prototype Engine because it's harder for them to do the necessary mass-damage and riot control functions needed for PUG CSEs that will **** up because there will always be one or two with rainbow boats or insist on destroying cubes first despite numerous PMs and team requests not to.
As I recall my Fleet Escort got the Prototype Engine first, RSV second and cruisers, never.
Did anyone mention that it only drops from the Cure Space Elite?
So yeah it's harder to get the loot than it is for Infected or Kitomer. That being said I did get one myself I just don't know if I should get Omega or KHG as I use both Engines. 2P KHG is Shield and Engines. And I use 3P Omega on my Raptor.
@ Feistyfawn, I've ran maybe one hundred completed STFs. Equipped three ships with Mk 12 Borg Weapons. So the Prototypes Drop. I also find that if I greed the loot rather than need I get Prototypes maybe it's the universe lining up maybe it's coded into the game I don't know but I'm rolling in em from using Greed.
And at the end of the day would you prefer a Mk 11 Console or a Prototype.