Welcome! Cruised around the Baltic last spring and traveled into the northern tip of Norway in 1974 while on a cultural exchange in Finland.
Am familiar with some of your gear. Am a fan of Schiit practices, so tried a Freya (with/without NOS tubes) and Gungnir MB a couple of years ago but they sounded no better than a $1200 USD DSPeaker Anti-Mode 2.0 Dual Core (from Finland), so sent them back. Have heard Zu, but didn't sound musical at all, instead were harsh. Have also heard LS50, but again not impressed with any modern KEF speakers.
Unless you really know what you're doing, wouldn't recommend modifying gear. Best to buy gear you like from companies you respect up front. Altering designs usually just messes them up or at best changes the sound to what someone "thinks" is better. And of course you could break something. In your part of the world Dynaudio is an obvious choice for speakers. That's a company with a 20 year history, does lots of research and development, sells for home and studio use, and produces everything in house.
Other good Scandinavian speaker manufacturers I can suggest include: Amphion (home and studio use, very room friendly); Buchardt (a current mail order darling); Genelec (for active studio monitors and another company that uses controlled directivity design for reduced room interaction). B&O hasn't had much of a presence here in the U.S. for decades but back in the day their speakers were very inefficient and dry sounding.
By the way, am a big believer in the design and sonic advantages of active speakers (low voltage crossover connected to one channel of amplification per driver). Recording, mixing, and mastering studios use active speakers almost exclusively for enhanced dynamics, improved frequency response, sharpened imaging, and unbelievably fuller/deeper bass.
Am also a big believer in the importance of the listening space. Room size, shape, isolation, setup, and being dedicated to listening (to allow for proper setup and listening when you want) are paramount. Too many way overspend on gear for the given room, that in my opinion is what headphones are for. Suggest reading Floyd Toole's "Sound Reproduction" 3rd edition to learn how speakers behave in-room.
In 40+ years in audio have never found a tweak that works unless you count room treatments from GIK (a sponsor here at Audio Circle). I'm not even a believer in differences between interconnects, speaker cables, or any other cable. (Yes they can make a difference, but don't like the idea of coloring the sound via wire, and best to simply follow the laws of physics and again buy from a company you respect and doesn't charge $$$ when $$ will do).