I don't know if the fleet that stays in Draco is any safer than anyone else. From my calcs, the Hierarchy have the following to hit us with next turn:
1st Fura + Flag Hertak ~91 capital
4th Nordera ~16 capital
2nd Fura + 3rd Hertak ~67 capital
The 1st Fura + Flag Hertak can (if they choose to) destroy any one of the fleets attacking destroying the 2nd Hertak (except the 3rd SF who are retreating).
The other 3 could combine to do ~83 capital, which would destroy the 4th CRF *if* they attacked the 4th Nordera this turn. If the 1st CRF stayed behind, then I think they would *just* survive (2% left!) attacking the 4th Nordera and being counter-attacked by them + 2nd Fura + 3rd Hertak. This obviously assumes that the 2nd Fura + 3rd Hertak go after Draco and ignore Algol, which I'm really hoping they don't.
Anyway, short story is that I think the fleet that remains in Draco should not attack this turn, it'll give you a better chance of surviving the counter-attack.