Keep in mind that the Astromech slot costs points to have on a ship. It can be good without the card costing any extra points.
Also almost everything that can take an astromech at the moment is behind in the meta save a few named pilots who already have potent options.
Here are some abilities that may work.
If you bump a friendly ship you may still take an action.
When defending if you roll all blanks add one die to your roll.
When attacking if you roll all blanks add another die to your roll.
Munitions refit: add one extra munitions token to a single bomb missile or torpedo upgrade.
Two sided card
Side 1 Action: perform a boost maneuver. Flip over
Side 2 Action: flip this card over.