Hmm. Maybe extra filter categories, but that might be too fiddly. The UI flow of "check map, go somewhere, check map again" would get more awkward, plus a lot of the screen is taken up by stuff you don't care about at that point (i.e. reports).
I was thinking, maybe the map filter categories (for both system and sector map) could be governed by "modes", which you switch according to your current
goal set.
So when you play a head hunter you'd activate a "tactical view" and see fleet movements, general bounties, special targets etc. As a trader you'd activate "commerce view" and see prices, trade events and possible threats. And maybe later on for explorers some kind of "scientific view" that focuses on astrophysical anomalies and tech mining opportunities.
Not to say that important things like fleet movement could not be shown in all modes, but with very different emphasis (symbol size/differentiation).
That would fit with how I am playing the game so far, at least (i.e. switching around my goal sets).
It would, by the way, be lovely if a double click on a log entry could open the associated location on the map (it does mark it, but you have to switch manually).