I'm surprised the small burst pd laser got buffed, I felt it has always been the best small energy pd system and that the PD and the LRPD laser needed a buff more.
Best for the slot, sure. But when also taking the OP cost into account i could only very rarely justify using it to myself, and i've read on here that plenty of people felt the same as me. That's probably why it got buffed.
As for the other two, LRPD *is* getting a buff by having 1 OP slashed from it's cost, iirc? Think that's a pretty good buff myself since it's basically a side grade of normal/short range PD anyway. And now that'll be reflected in their cost.