Hi again, Phazma
So, you can find the modifications that could be done
here. Be sure to read the bundled pdf file to use the patch, especially if you are not used to modify themes. If everything is going as expected, you should get something as following :
You'll probably have to tweak the color of the
Mixer FX knob text parameters in Reaper Theme development/tweaking window to get something readable for the fxparm area in a tcp selected panel. This is a theming limitation, as we have only one color at disposal for both the tcp and mcp...
Concerning your request for the pan/width text format : it is sadly not possible also, as the one existing is hard coded somewhere in reaper and is not tweakable. Another irritating limitation...
Hope that the modifications done will match what you were expecting.