It seems you only want theymos who answers your question, right? So, why don't you PM him if this question is intended for theymos only?
Well, let me try to help you. In my view, any changes are always possible because it must depend on the situation and condition of our forum in the future. If you saw the rank policy system could change in 2018, it is also the same as in the future. The system will follow what is needed/urgent in the future.

>The change indicates that our forum is growing and trying to find the best system to apply for the current condition.