Thanks to all for a lively thread and some good advice. @lowrider57 @musicmann1 in particular for sharing their (g)ear-on experience.
It is not hard to guess that I will receive a mini loko+ shortly and thus have the possibility to judge myself whether it improves or degrades my system.
The issue that remains to be seen is whether the combination of high quality broadbanders with two DSPcontrolled subwoofers has advantages over more classical (passive) loudspeaker designs with multiple drivers.