So what's wrong with this?

[Yorkshire Mouth]

I think the major overlooked thing here is the Room you are listening in. Even with great gear, and even great rooms, there will almost certainly be some room correction required. You've not mentioned the size of your room, furnishings etc, these can all have a massive impact on the sound quality. Not sure what software you are using for playback, can you add some DSP/room correction? PS I'm on the journey myself, got myself some nice new gear and am amazed at what difference room correction filters can make.

I use room correction on my WiiM Ultra.

Listening nearfield, the room has less effect on what you hear.

 

[ChrisUpNorth]

Ok but sound reflections from walls, desks, surfaces etc. will have a prominent impact on sound quality, regardless of room size. I was just saying because it had not been mentioned and you were asking what was wrong.

 

[Berwhale]

I'm in a similar position as @Yorkshire Mouth and i'm really happy with my desk setup. I was considering getting a couple of GIK 50mm diffusor/absorber panels to go behind my MTMs, but I've not left enough space behind my motorised standing desk to fit them without turning it into a permanent sitting desk