In the second or third engineers livestream one of the devs said something about you getting more rep for fitting an upgrade than for just discarding it and re-rolling. Haven't heard anything else on this issue from Frontier but it did seem to ring true in the beta.
I upgraded a shield booster and did not like the drawbacks, so decided to re-roll after I checked the standing which was at 38% in tier 1. The second roll I actually equipped and it took me to 29% of rep in tier 2.
Just wondered if anyone else noticed this?