Nice. That was a fun thread to read through. Though at this stage I am just as happy writing in english, esp about tech matters.
I haven’t spent much time here yet, but so far I am very impressed! I like the way you have set up your forum and also like this welcome topic which is the first I’ve participated in, to be honest. I think you may be giving out too many badges - not sure how other new members feel who are not familiar with discourse, but even I found the sheer volume of badge notifications to be a bit overwhelming and even confusing. 
See screenshot. I wonder if there is a way to suppress badge notifications for some badges that are less important for the member to know about right away or that they never need to know about, like the Basic badge.
That said, I’m intrigued by the ‘Active last 30 Days’ badge - is that created with a query you can share? Is there also an ‘Active last 30-90 Days ago’ and ‘Active 90 days ago or older’ badge, so we know who to target to encourage to come back and who to give up on?
That would be super cool - thanks so much. Let me know where/how we can connect on this. Maybe you can join my discourse also or we can take it to another topic or PM here or on meta? As you prefer.