Every account starts off with honor 2, its ranked ready. If you behave badly, you automatically lose honor anyways and you should not be allowed to play ranked until its back up to honor 2.
Having punishments of having to play normal games or win normal games does nothing, because people are still toxic in normal games.
Instead of doing all these incredibly bad ping changes, just try it out for 1 split next season and see how the data or the people respond.
I see 0 negative reasons for why ranked should not be honorlocked. You dont lose honor from 1 game of being toxic, unless you are EXTREMELY toxic in that one game.
You dont lose honor from being spam reported, unless you type something in chat to trigger the system.
I am tired of only having 3 missing pings, just because Slippin Jimmy could not keep his mouth shut. At this point you are trying to lose your core playerbase, to protect 5% of people from another 5% of stupid people.
There are other ways to reduce toxicity.
You could be very direct, like I heard an EA game (dawngate) did. Basically you need to level and you can only do so by staying clean, so to speak. If you are toxic your growth slows down or even gets set back. This is relevant in that it also impacts your power level. The way I understood it, if you are underleveled, you do less damage or something like that.
Apparently it worked pretty well in reducing toxicity.