I'm slowly working my way through the new releases, and I've got a few,games each under my belt with Kylo, generic Silencers, and TIE/FOs with Advanced Optics. The more I play it, the more I appreciate it. It gives utility in so many ways.
1.) It provides an extra action on many turns of the game. Loading up the focus turn 1 means you have more actions free to Target Lock or Boost/BR or Evade.
2.) It lets you carry full offensive mods between turns. Both Focus and TL can be carried, so you can bump, fly over a rock, or pull a red move and still get full offensive mods in many circumstances.
3.) It's like Comm Relay, but cheaper and better. The Focus is a much more flexible token than the Evade, and 2 points is cheaper than 3. Unless you're taking Juke, Advanced Optics is the way to go.
4.) It's like Weapons Guidance, but mostly better. Having a Focus on board lets you take Target Lock as an action, and TL/Focus is about as good as Weapon Guidance in most cases.
5.) It is especially useful on generics, because they often have reduced time on target, and the banked Focus lets them put actions to work on turns where they have no shot. It also gives them light ace action efficiency giving them multiple actions on key turns.
To reiterate the point in number 5, it's a huge boost to ships that don't have an EPT with which to gain action efficiency. This makes the generics a very interesting choice, because they retain some of the raw power of named pilots without paying the points for the PS. This is useful when trying to maximize efficiency.
Take a hard look at this card, folks, it's in line with Expertise and Predator as a core power upgrade card, but it can go on anyone with a tech, no need to pay for EPT access. In a world where PS bidding is going higher and higher, it might be time to look to lower PS, and if you do, you want this card.