I don't know why FD are going that way. What they need to do is something like the trading heatmap, but have activity filtered per power, and per ship scanned in system.
Honestly, I would be fine with a 'shadow guide' for the Power Play menus. If PP NPCs are destroyed in a system, the undermining bar shows a 'shadow increase' in merits earned. Those might never turn full if no one cashes them in. That way reports come through, but aren't confirmed, so holding merits on your hull are still an issue.
You could even apply this to fortification as well, so inbound to HQ fortifiers might not double up tasks. Outbound to CS fortifiers would have to declare what system they're taking their cargo to, and you'd see a shadow increase.
Menus only update every half hour, so every fortification trip will complete before everyone sees the shadow increase, so it wouldn't be useful to arrange an ambush via that mechanic.
But it would change sniping strategy, close a 'reporting' loophole in Power Play immersion, and make the menus look a little bit cooler.
Power Bounties are a prize for an effective and successful PP PvP kill. They do not punish anyone because they give no limitations in starport access or are paied by the destroyed CMDR.
I think we should be saying 'not supposed to' punish anyone. Because from reports on this forum and in bug reports, they clearly currently are still punishing people. Whether that bug has been fixed and these people need support help is another question, and one I'm not sure has been answered here.