SGU: Amanda Perry.
I was rewatching the show and had a strange thought.
When Amanda Perry was killed and uploaded into Destiny's computer the first thing we see her do is show TJ how to perform kidney surgery. She could almost instantly access and understand Destiny's database and be aware of the urgency of the surgery.
Having a person, or the consciousness of a person, who has that capability would have been invaluable.
Fixing shields and weapons may have been possible. Finding stars that they could recharge from that didn't have drones blocking them may have been possible.
She may have even been able to help them dial earth. I think she would be hesitant to do so because of the risk of Rush leaving no matter how small.
Even if they still had to make the jump to a new galaxy she would be able to give them the instructions to repair the stasis pods.
But she got boxed up because of irony. Rush and Perry made a emotional choice that caused a problem and Eli had to make a practical one to solve it.