Speaker are where we couple (impedance match) the electrical energy to the acoustic.
I don’t love my speakers and will consider replacing them at some point and had originally considered replacing them first. My listening room is small- 10’x11’.
If you don’t like your bright speakers, then I would not try to spice them with warm gear. Just sell them and get better speakers.
To put off that reality is not going to help in the long term (IMO).
Simplifying the stack, and getting rid of stuff you do not use, is also a way to help fund better speakers.