First, take your time and carefully choose your approach. Try to band aid it or rethink your choices and put together a synergistic system that sound exactly the way you want it to.
I had a very dry and detailed oriented system and did a major upgrade before retiring. First thing I did was to switch over to Sonus Faber speakers. It is very likely you are going to be able to listen to music more in your retirement... and it is also likely you will come to appreciate a more musical system. One that is very emotionally engaging. The first step is the speakers to consider. Sonus Faber also look incredible. You want natural and musical ones. So, I would look to audition some Sonus Faber. Used are good as well, up to about 10-12 years ago. Before that they were even more relaxed and warm... perhaps too much.
Alternatively, you can examine your cabling and electronics. If you have some real hot / detailed electronics like Benchmark then swopping for warmer would be needed. Cardas cabling and interconnects are very warm especially the lower level ones. This could be the ticket if you want to do a minimum.
