I have been going back and forth, back and forth trying to come up with a set of skills for my two Engineering BoFF's that do not double up or cause a cooldown on an un-used skill. In the last few days I have discovered that it is not possible. There are only 5 Ensign Engineering Space skills; four of which will experience a cooldown if one of the four corresponding Lieutenant level skills are activated. For instance when I activate Emergency Power to Shields II my Emergency Power to Weapons I goes into cool down. Now I have noticed that during space combat there is this cooldown of certain skills but that does not happen on the ground.
For instance I accidentally had CoverShield I and CoverShield II on the same BoFF and he would create two cover shields sometimes one on top the other. Once he had his back to the wall and create a cover 45 degrees to his left and then another one 45 degrees to his right literally boxing himself in against a wall. I was like you "dufus" how are we supposed to get cover and now you can't even help us shoot from back there.
I am not complaining about the existing skills, I would just like to see more available skills that are not affected by other skills. I mean if I have currently 6 slots for Engineering skills I'd like the chance to use 6 different skills and not have to choose between on or the other because of the cool down.
I am not sure if Tactical and Science BoFF's are affected the same since my ship only allows for one of each. When I make a couple ALT's then I will see if that becomes a problem.
Tactical needs more skills at tier 1. Right now cruiser and science ships got nothing useful to take when they get another ensign at rear admiral. (making the other ship which has different sci/eng BO better choice)
personally i would run 2 "power to shield" at ensign level.
that power have a ability cooldown of 45 seconds (at maximum boff rank), global cooldown of 20 seconds and power duration of 30 seconds. essentially if you cast the seconds EPS as soon as the global cooldown is up, you'll only have a window of 5 seconds (after 1 minute) where the power is not active.
essentially you have a constant 9% damage resit to energy, constant +10 shield power and the 2 seconds shield regen every 30 seconds. (edit 20 seconds)
i think it is the best you can do with ensign powers.