There are flaws here, but it's miles above and beyond what we currently have. And some flaws are fundamentally unfixable due to the core nature of the game, so a proposed fix shouldn't be rejected just because it doesn't fix EVERYTHING (block list, overpowered engineering in PvP, etc etc).
BGS and Powerplay stuff - Agreed 100%. If you want to have an effect on other people, play the multiplayer mode. If you want to be singleplayer, then play singleplayer. The only people this would negatively impact would be the people who want to oppose other players while opting out of being opposed themselves.
Promoting PvP stuff - ehh, I'll let the actual PvPers weigh in on that, but definitely better than what we have (nothing). The scoreboard would probably go the way of Squadron leaderboards and just be a competition in who can game the system the most, but uncapping bounties and better tools for tracking potential targets are only a good thing.
Piracy kills dropping cargo - kinda invalidates the normal piracy gameplay, but that's not the fault of the proposal. Short of getting actual tools for piracy (ways to stop a target, commodity pricing that makes it worth stealing, etc) it'll do for making piracy vaguely profitable. I'm not holding my breath on the actual fixes coming.
I don't especially like the idea of ATR being basically everywhere. Time to kill on a properly outfitted ship would be well in excess of even low-sec systems. The core problem is that the game doesn't do a good job of teaching what is a "good" level of defenses. You go from pathetic NPCs 99% of the time to a wing of engineered murderlances in a split second. Makes sense for high-sec at the least though. Definitely not low-sec.
Adding the value of the ship to a bounty, and then doubling it every subsequent kill - Y I K E S. That's insane. We're fine with the current scaling based on rebuy and notoriety, which discourages a lot of rapid kills. There are "legitimate" reasons to kill clean commanders as well - not everyone opposed to you, in BGS, Powerplay, or whatever, is going to have a bounty. I don't want to have to scrap a ship because I killed a few hostiles.
strong 7/10, with the current mechanics being a 2/10