So, there is something that I feel like I need to say here. Perhaps it's been said already, I don't know, but I'm repeating it if it has:
Capping player bounties at such a small number is absolutely asinine. I simply can't wrap my head around how, in a game where you can still farm over 100,000,000cr in an hour on the mission board, you're worried about people farming this tactic for financial gains. It's ridiculous. There are MUCH easier and more efficient ways to make cash. Even if someone was to abuse the process, it wouldn't be that profitable. The only thing that this cap on bounty gains is accomplishing is ruining the potential fun and intensity of an actual PvP encounter with a wanted mass murderer. You can make seriously solid profits just running missions in a system that you've allied yourself to all the factions in, without board flipping at all. Imagine the feeling of actually managing to take down the guy who's been terrorizing the galaxy since 3.0 dropped, and has accrued massive bounties all over the galaxy, only to get a few million credits out of it. Let's not downplay how hard it's still going to be to get bounties that high with the new CONCORD system you're installing into the game.
Actually making it profitable for CMDRs to hunt and kill criminals is something that I think this game really needs. Instead of capping bounties, you should multiply them by things like notoriety level, difference in rebuys, and difference in combat ranks. Sure, still set a cap somewhere, but if I kill a guy with 50,000,000cr in bounties who's been killing noobs and traders for two weeks... I better be getting damn well more than 4-6 million...
FDEVs caution is understandable. People whine constantly whenever you can make a reasonable amount of money. "OH NOES NEWBS IN ANACONDAS!" Sigh.