Here's the thing; what point is there to punishing someone who files a false report, when the IFS can easily just toss it aside and ignore it, without issuing a penalty to the reported player?
'Cause, the IFS can very easily toss out false reports, so the only reason one would have to implement punishments for false-reporting (which, by the way, a 1-day ban + 10-game CR are both overkill and arguably inappropriate punishments for simple false reports) would be to discourage people from filing false reports.
And a big negative side-effect would be, people who honestly think that a player was misbehaving could get punished simply for having misconceptions about the behavior of the player they were reporting. Should innocent people really be punished just so that the few who spam report everyone and everything get some sort of reprimand in an effort to make them stop?
Additionally, making changes to the Player Behavior side of things wouldn't magically free up resources for the Client. The people who work on the Client and the people who work on the Player Behavior systems are different teams, so, if your goal is to try and free up resources for the Client team...Well, mission failed.