One real "problem" for me is that a fair amount of my favorite music was recorded "indifferently" or worse. And if a system is a little "too good" (i.e ruthlessly revealing), those kind of recordings may become somewhat unpleasant to listen to.
In my experience, a very transparent tweeter like a planar-magnetic, electrostatic, or ribbon may not make poor recordings unlistenable, but a metal-done tweeter might. I think that is a result of the tendency for some metal domes to "ring" a little. That is of course a broad generalization, so no offense intended, metal dome tweeter owners. 😊
Do many of us work towards building a system transparent enough to serve the music well, but not so unforgiving that less-than-superb recordings lead us to not listen to them as much as we would like to?
When Audiogon member Simon (folkfreak) had me over to his Portland home to hear his outstanding system, the sound of the tweeters in his Magico Q3 loudspeakers (augmented with Townshend Audio Maximum Supertweeters) contributed to a tonal balance I am not accustomed to. I had heard Magico’s before (I don’t remember which model), but in a bigger room and at a greater listening distance (in Simon’s old room the distance was about six or so feet, maybe a little more. Is that correct Simon?). And Simon’s room was very neutral (it was fitted with ASC products, including the WallDamp used in the construction of the room’s structure), "cooler" than the somewhat warm room I listen in. I hadn’t before heard the Townshend tweeter, and of course had no knowledge of the spl/crossover frequency, etc. it was being used at.
The LP’s I brought along (Richard & Linda Thompson’s Shoot Out The Lights on UK Hannibal Records and Cat Stevens’ Tea For The Tillerman on UK Island) sounded probably the over-all best I have ever heard them (both are excellent recordings), with not a trace of hardness, glare, or other nasties (Simon’s ARC and VTL electronics share in the credit 😉). But the higher frequencies were more prominent than I am accustomed to. Interestingly, Simon---having traded his Q3’s for M3’s---no longer feels the need for the Townshend tweeters.
I have long felt that the popularity of the Vandersteen Model 2 (well earned and deserved, imo) was in part due to it’s slightly forgiving nature (in comparison to some competing loudspeakers); that is, just slightly on the warm side of neutral. Vandersteen owners may prefer them to, for instance, Wilson’s for that very reason. Vandersteen’s can be listened to for hours with no listening fatigue, even with somewhat bright recordings. I’ve never owned a pair, but have heard many hours of music through them.