I keep being drawn to the Recon Specialist, on my big ships. But unless you have something else to do with it (use deadeye or give the tokens away) all you can really do with two tokens around is use one to attack and one to defend. The YT-1300 and the Shuttle only have 1 agility and the Firespray only has 2. I'm not sure that the recon spec helps that much.
for 2 more points you can get a gunner, which doesn't take an action. I feel like I would like a focus and second shot if the first shot misses rather than an extra focus token to use to defend.
Yes, you can only use your focus token on one of your two attacks, but having a gunner means that if you get a poor roll, that includes a eyeball, you can choose not to spend the token and get another roll all together.