Thanks very interesting post... I live the same experience... A room with a flat response is hell not heaven.. It is not even possible in most room anyway..
Not understanding the frequency spectrum. Thinking that a flat room response is the ultimate pinnacle. We all know how annoying peaks in the bass region can be, but I have since discovered that small peaks (around 3 db) at certain frequencies, in the mid’s and low mid’s can add a richness to vocals and that certain dips in the mid’s can remove a hollowness from vocals that can show up from time to time. A peak in the upper mid’s can add a very striking presence to vocals, lead guitar, acoustic guitar, upper register wind instruments and snare drum strikes. Strategic dips in the upper mid’s and highs can remove the hard edges that you sometimes hear on vocals and can diminish background noise that you don’t even know is there until it’s gone, which reveals a noticeable amount of clarity and detail and creates more air around each instrument. Lastly a peak in the upper high’s that can add a shimmer to cymbals that gives them an almost crystal like quality.