I just had the opportunity to do a Hive Onslaught Space Elite run with 4 kind people in their 50k-75k dps builds. I myself scored a mere 20k dps (could have been a bit more if my Feedback Pulse had been of more use, but there was an epic tank with us, so...).
The borg were defenseless target practice. In Hive Onslaught Elite. The mission lasted 5 minutes and 45 seconds.
Should there be an Elite mission where the NPC's are defenseless target practice? Should this even be thinkable? I think it should not. If there is such a mission, should it be Hive Onslaught Elite? Most certainly not!
I want Hive Onslaught Elite to be a (at least!) 20-minute struggle with at least a bit uncertainty about the outcome. Where I have to be creative with what I got to survive and do sufficient damage. Where get the feeling that this is really tough, even though I did what is possible (within my budget) to make my ship strong and tough.
Devs. Please make that possible.
Remember, STO is nothing but a cosmetics game, where only the rule of cool matters. The game mechanics are intentionally out of balance, don't try to "optimize" anything, as it would just frustrate you.