I've seen some big swings in the Colonia region recently that don't have particularly high traffic reports associated with them. These are all sub-million systems, of course, but if anything the outcomes seem bigger now than they did back in March when they announced they were slowing things down a bit.
As Jmanis says, the relative effect of action types has been rebalanced, and a mix of actions is more efficient than a focus on a single type.
Possibly due to fewer players going online since the game went into maintenance mode.
Most player activity measures (EDDN jump events, squadron point rate, etc.) are roughly stable since 3.3. There might be fewer casual players about - much harder to measure - but that's not going to significantly affect the numbers actively playing the BGS and contributing those events at the really high end of the curves.
Constantly retuning the overall BGS response rate to the total active player count would be a bad idea, too - systems with stable player populations would get arbitrarily harder or easier to influence based on events happening elsewhere in the galaxy.
