Wow, beautiful system you have assembled. All broken in? Correct? A system like that at least 500 hours… but the bass should be real close after 200. It would be of great help to see photos. You can easily post them by creating a virtual system. You can see mine. The venue is critical and it is not easy to describe fully in words.
I would say with great certainty speaker placement. It typically takes me a year to get mine optimized. When I am concerned about bass. I take off the spikes and put sliders under the speakers. Number one will be distance to wall behind and sidewalls. Once you are sure this is right… the toe in can increase the treble… tipping the overall balance.
Finally if all that leaves you a bit uninspired… is there a chance the system is a little too polite? dCs is very resrained and a bit well, not cold… but not warm.