Abyssals are fine as they are at the moment. No need for any nerfs or buffs to them. A long time ago, ppl complained about OP Marshal rooms, but that got fixed by letting them spawn with no shields, plus the surgical strike revert was also an indirect buff to the abyss.
Trig ships are fine, no need to nerf their spool up. Also, the trig NPC’s spool significantly slower than player flown Trig ships. The Kikis only spool 2% per cycle, the Vedmak 4% and the Dreks even only 1%.
There was a doctor who event which took place inside abyssal space, and I must admit, it wasnt a good one.
Tier 0-2 abyssal sites can be solorun in cheap T2 frigs already, and Frig abyss is meant to be run in groups of 3 ships (or multiboxed)