Goal reached. 
That’s what I mean, this argument is brought up again and again, but without background–also on the clients side.
As far as the requirement goes, of course clients want things. And sometimes they are forced into certain things (as is the case with Roberts client, forced by Magento). I am fine with anything in this regard, as long as it works. Still didn’t have time to check your suggestions (sorry!), but I voiced my concerns, you discussed it and I trust you to make it work. Thanks!