I've mentioned this on other threads asking the same questions about what could replace the Dynaudio Special 40 and it may just be the Revival Audio Atalante 3 monitors.
Daniel Edmonds is the owner and designer of all Revival Audio speakers. He designed speaker for Altec Lansing, JMLab-Focal and Dynaudio. As lead engineer at Dynaudio for 7 years he designed: Contour 2016 range, Special 40, Evoke, Confidence 2019, Contour i series 2020 and the Heritage Special. He knows a thing or two about speakers.
Try to audition a pair of Atalante 3s if you can. I bought mine sound/unheard based on the overwhelmingly positive reviews online from all over the world. Dealers had a difficult time keeping inventories in stock when they first came out. Everything is made in house (in France) and the drivers are designed by him and used only in his speakers. He's only been in business since 2021 and his prices can't be beat. For $2500, you can conceivably get a generation or two of improvement and refinement over his earlier designs.
All the best,
Nonoise