MeowersNot just badly implemented... It's easily abused by players who will squeeze every bit of advantage from wherever they can. I guess FDev are in need of some people who know that part of player psychology: bet they thought about wings of commanders fighting on respective power-provided weapons, but (classic!) we have people galloping from one camp to another grabbing everything they can. Anyway, it's not going to change soon, because what we have with this materials and engineering part of game looks even worse and illogical.
It should be possible for prolific players to become powerplay characters themselves. This would give PP a whole new quality and also open up the opportunity for power struggles within PP factions. It would be open-ended gameplay for those who already achieved everything else the game has to offer. The current PP characters are boring because they are protected by FDev's plot armor: nothing we do in-game will make any of them disappear or be replaced, unless FDev is planning their replacement anyway.