Hi Rojo, welcome to the Naim forum.
How is it in sunny Dubai these days, many memories for me, I go back to the time when it was just a small city, I stayed at a small hotel on the beach way out of town near to where my local guy lived, that beach is now occupied by the Burj.
Agree the previous posts, especially that it’ll probably get worse as you upgrade.
You say " … lacks some separation and bass … could be a tad tighter"
That could be caused by your room layout, the close side wall & corner on the left speaker & the very open right speaker & with no rear wall extending out to bass frequency wavelengths. If that is the case, new or better boxes won’t help.
I don’t any answer to it either, other than moving it somewhere else in the room. Keep us posted on whatever you do, success or not.