If this is what I think it is (the Original Lemmings Lemmix player with the ability to play ONML styles), I am very, very appreciative of this, moreso than you'd think
I plan on making a new Lemmings game with 120 new levels (including new training levels and new "Fun" style 20 of each levels,) --- but it would have meant hours of converting my old levels (which I planned to use to fill out Tricky-Mayhem) in the Brick and Bubble styles to Original Lemmings. This is amazing.