I honestly dont even see how the PK streak thing is a "problem" to anyone. It's not like having >40AP is cheating; it's a well-known mechanic. If you want to focus on PK streaking instead of total kill count, you just have to wait a few hours to get to 40AP, then use the same method other streakers are using. If youre mainly focused on total kill count, then having high streaks shouldnt even concern you. Its not like its even put on a scoreboard.
People might be saying "it's easy to get 400+ kill streaks," but I guarantee you that process is definitely tedious, and you would also be forced to be extremely cautious. It's not difficult to get trapped or get hit by an unexpected projectile.