Agreed, especially for songs that MJ had planned to record but never got the chance to. There are quite some bangers in the vault but since MJ isn't the one singing them there's no option but to leave them unreleased which is a damn waste considering that some of those demos have been shown to be good to listen to (i.e. Jungle City, Willing And Waiting and Change). Shut Up And Dance for one is also said to be a killer track by people who heard it on seminars but since it's someone else singing the song it will never be able to be heard by the public unless it leaks, so giving the song to some other singer is a nice way of solving that.
And also I feel like the Ne-Yo demos could be released as is, I'm sure they sound great since Ne-Yo is a very talented singer. There's also not gonna be the need to give them to someone else since it's not like he's a no-namer lol. Hopefully he changes his mind about not releasing those songs someday.