high end standmounts that do not punish poor recordings?

There is simply no way to build a high-quality, high-end audio system to primarily cater to a few bad recordings without sacrificing overall sound quality.  However, assembling a high-end audio system is like Burger King, you get to have it your way, LOL!!!.    Happy listening.    

Another option would be to use an EQ unit in the signal path. Use something as simple as a 4 band Schiit Loki Mini and you can tone down strident or spitty vocals or add a bit of warmth, boost or tone down bass, or even add a bit more sparkle. The nice thing about the Schiit units is there is a switch to completely take the EQ out of the signal path when you don't need to use it.  This lets you keep the speakers you love for the good recordings but gives you an option to improve things for the bad recordings. 

My goal was first creating a system/room able to reveal the acoustics  recording conditions and information hidden in any album. It was not to create a sound pleasing me so much that creating  a revelatory acoustic translation ...

Bad recorded albums can be enjoyed on a good system/room better than on a bad system/room because we are able to retrieve more lost information from a good system/room ...

Audio is not about tastes, marketing is about "tastes" conditioning, audio is about acoustics...

Audio is not about gear design pricing  but about the conditions making possible for any system at any price to reach his specific optimum peak ...Then audio is about acoustics with an "s" not just mere room acoustic.

I'm assuming that you are in Canada based on your screen name. You should definitely check out Gershman Studio speakers. They are very detailed but never bright or etched. The easiest speakers I've ever had in terms of listenability. I had Kef Reference Ones and sold those after getting the Gershmans. I also have Harbeth Compact 7 30th anniversary, which are very nice but not as smooth as the Gershmans. The Gershmans also do the disappearing act and create a huge sound stage and produce a surprising amount of bass for their size.