GNOME is fantastic and has a lot of common with MacOS. From my standpoint, the biggest thing you lose is the headphones sync between devices which can be an irreplaceable feature if you have enough devices to share them between. Other than that, it feels like mostly small potatoes. SMS Message sync can be replaced with qtconnect, Google Voice or the Android Messages web app… there’s options. Chrome is mostly a decent replacement for Safari, especially if you have an Android TV or Chromecasts and all that. Basically, just prepare to take a few giant steps backwards in terms of overall polish, and dope cross-device capabilities. You get to use GNOME, though - and that’s one or two smaller steps forward in terms of clean user experience.