I just got an idea. I'm not sure whether it's genius or brilliant or just the flu talking.
Actions in Open do not influence the BGS. It makes so much sense. The BGS is a result of PvE activities so it doesn't belong in a mode that enables irrelevant PvP. Anyone who wants to influence the BGS does so in solo/PG, equaling the environment for everyone. The thing that sets open apart from the other modes is not relevant to the BGS anyway. In Open you can use tricksiness with your connection which means you bypass the chance of meeting other CMDRs, plus instancing, plus different gaming platforms, plus timezones, it's a mess. My solution has none of these drawbacks.
Everyone is happy, cake all around.
*achoo*
Maybe it is the flu talking.
I wholeheartedly endorse this idea