Regarding the Punkbuster anti-cheating

The new anti-cheat system is "Easy Anti-Cheat". Asking EA to do there work on a no more profit game is like saying that they care about the customer or the game that talented people managed to creat. Nowdays they are more questioning when they will shutdown BF4 and others as quick as they can.
EA was registred as the 5th most hated company in the world and you still belive that they would do anything for there customers ? Take this pay to win loot box instead.
Anyway currently "Pbsvc" is outdated and from loooong ago, it has became to the community to manage the cheaters. And last game update seems to be 4years ago.
If you have any hope on something to hapen please consider giving up, better for you.

Pity...

As @Darckdore rightfully refer to, the days for providing feedback on BF4 to REA/DICE and then get any changes implemented are long long gone.

Matter of fact, the developers in-house do no longer even have the source codes at their disposal for the client side software of this game, as all development and maintenance of the code was discontinued many years back by now.

So the gaming and all we do with it these days is 'as is'.  Take it or leave it as it is, as its not going to be changed/updated in any way at all.  Only area we from time to time see a small little chunk of change on is the server side software component.  Reason being this is required for the game still to reside on e.g. the SONY PlayStation Network and the MSFT Xbox environment, as those companies continuously keep their platforms evolving.  So the game developers who places their games and their servers onto those platforms are required to follow suit to ensure the platform integrity is maintained..