If you want to affect AFK game of drones specifically - it is much easier to deal with it at its source: aggressive drone AI. Remove it and no more AFK is possible with drone vessels, period.
ps: Debating with Scoots might be interesting, but he will fiercely defend against any attempt/suggestion about solving AFK farming with drone ships as if he has some vested interest in that (lack of) activity. For example, this previous thread that got derailed a few times but still has some discussion about AFK and VNI.