I have installed LibreELEC-RR 11 on RasPi 4. Samba is not working, but it's known issue in 11 build. Also WiFi connection after restart is disconected, need try few times to connect. I think it will be corrected in next revision so i get back to 10.x version.
PS. I really appreciate Your job. Your build is that, what i wanted from the beggining of using LibreELEC - emulation integration accessible from Kodi screen (not Kodi from eg. RetroPie or RecalBox). Big thanks. If You have any buy my a coffee or so on I'd like to buy you few 😎
BTW. I have edit my post because i found way to upload Dolphin And PSP emulators to the retroarch