Originally, Deadeye came out, and it was terrible.
Then Wave III came out, and Deadeye + Recon Spec + Adv. Protons was a possibility on the Firespray (and soon on the B-Wing).
Also in Wave III, Deadeye was able to spread its cost over multiple pieces of ordnance for the first time on the Bomber and B-Wing (discounting the Slave 1 title).
Since then, we've had the addition of R2-D6, Ion Pulse Missiles, Flechette Torpedoes, and Munitions Failsafe.
R2-D6 means that the level 3 and 4 X-Wings, Y-Wings, and E-Wings can take the upgrade, meaning more than just the A-Wing can take it to forestall the lack of Target Lock due to pilot skill.
IPM and Flechettes are both cheap enough that sending 1 more point onto the ordnance isn't throwing good money after bad.
Munitions Failsafe means that every ship has a theoretically infinite number of ordnance slots, so long as they're terrible shots. And each turn you fire a missile/torpedo is a turn that Deadeye isn't worthless.
Has the worst of the 1 point EPTs been, finally, redeemed?