I actually installed The Last Remnant a few days ago, since I'd owned the game for many years and it was one of the games whitelisted by Valve for Steam's new Steam Play for Linux that uses Proton and I figured I'd try it out just to see how Proton worked. It worked seamlessly and the game installed and ran great with all features working, just as if it was native to Linux, by the way, thanks for asking.
Anyway, I wonder why they are removing the game from the storefront? Do people have compatibility issues on Windows 10? Maybe they are preparing to launch a remake or remaster? To be honest, I think it holds up quite well graphically for a 10 year old game. If they do remaster/remake/reboot it, I would like for them to remake the character progression systems and have someone other than Tzeentch make it, so that us mere mortals might have at least a chance at deciphering it.