@Xaver
My last reply to you on this
It will break your system, especially in a "rolling release", although this is not a "true" rolling release, it is the closest thing to it (debian sid), but, you seem like a smart mate (insert sarcasm) , your on your own, it is your system after all, you can do as you wish/please/desire, no-one is telling you what to do on your system.
Just don't ask for support.
Have a nice day, and Please, don't forget to smile