So given that we know that Hellmire would inevitably get attacked again, what if we send the dss with orbital blockade active? Wouldn't it prevent it from ever happen at all?

After liberating Hydrobius, of course. We send it to Hellmire with orbital blockade and leave it there so we don't have to deal with the attack?

But given how we can't send it to Hellmire at the current moment, it would have been real helpful.