A new disc is an awesome idea. I have used the 2014 disc extensively and even downloaded the files to burn myself a backup copy.
I'd like to recommend for the remembrance disc Toccata (An Adaption of Ginastera's '1st Piano Concerto, 4th
Movement; Live 1974; 2016 - Remaster) from Welcome Back my friends... because it showcases some of Keith Emerson's best synth work in a progressive piece produced by Greg Lake. I love the way Carl Palmer's percussion and Emerson's synth work together on this cut - but then, that's what ELP was all about.
For the "sound quality" disc, consider Flim & the BB's Thunder And Birdies from Tricycle.