There appears to be an issue with the Lucky Shot feat for the DR boss battle in sector 3. Having used Geonosians 4 or 5 times already to attempt to get the 30 crits needed and not having been successful yet, at first I believed I was simply winning too fast, but I no longer believe that notion to be correct. Having had some doubts, I slapped on a CC booster, went in with 90% stamina for a slower battle, although I needed a health booster as well to win, and played on 1x speed so I was able to count every crit.
With a total of 37 crits counted, more than is needed for the feat, I have still not received it. Understanding of course that it's technically not required for full rewards, I have invested a substantial amount of time into this feat and have been not able to get it, so I hope you can understand why that would be mildly frustrating.