@Thomas 911 thank you for the link. That is a great article.
This part (translated by the browser) shows the sensible approach and touches on your point about not turning the listening room into a room for professional mixing:
The temporal range "after" the initial time (the notch in the recommended envelope) is available for the "creative" acoustic design of a listening room. Creative is meant in the true sense of the word, because these acoustic properties do not refer to an absolute degree. To be clear: there is no reference listening room! Rather, the acoustic properties meant in a positive sense are based on the physical requirements of the listening room and its individual use. A control room, in which intensive work has to be done all day, certainly looks acoustically different from a demo room for short audio samples. As a result, you must first become clear about what you actually want. How long is heard, which average listening levels are realized, which material should be intercepted and so on. Of course, subjective listening habits and personal preferences also play a major role. The specific use of space can also play a decisive role. Is it about pure fun in music, is sound material processed or does the room serve to assess the sonic properties of devices? All these factors go into the "creative" acoustics of an eavesdropping room. In order to simplify the matter a little at this point, we are now referring to the situation in which the fun of listening should be in the foreground.
It seems you are using the Vicoustics diffuser/absober panels (in addition to diffusers). I think they are a great all-purpose panel and look nice in the listening environment.