I've been running Roon on Nucleus+, all my Meridian endpoints still work. Roon is not without bugs, but the latest update cleaned up most of the issues.

Roon's user interface is good and has the same functions for all platforms (OSX, iOS and iPadOS), works kind of like a web browser. I do like the simplicity of the Meridian Sooloos iOS App for casual listening. I'm mainly using Roon with the Devialet D250 PRO for 2Ch, the Roon Ready integration works great with the Devialet; and Meridian Sooloos for whole house audio & background music. I may end up using the Meridian less and less since I can no longer add new titles from Tidal.

Personally I think it's a huge strategic mistake for Meridian to abandon Sooloos and not being able to monetize the IP & keep the talents that left started Roon. If I were to build my music server/streamer system today, I'd have no reason to buy any Meridian products with Roon.

C15, QNAP TS453a, 218 (3u), MS600, Roon Nucleus+ 4TB SSD
2Ch: Devialet 250 PRO, Focal Scala, Velodyne DD10+ (2u), PS Audio P12, Transparent MM2
HT: Anthem 1140 & 540 8K AVR, Panasonic BD, 7.2: Triad & DD10+
JVC RS4300, Stewart 110" screen,
House: Triad Amps, Sonance speakers, PS Audio P10