Thanks for posting this, Ma'am (don't know your name, sorry, and "Blondie" didn't sound polite). We're relative Vegas newcomers, been serious only since around 2006, MSS was the first place we started getting comp rooms, and the Plaza was our second. Haven't been in a while, they started pulling the better games and we went elsewhere; hated to see them not keeping the place up after the big renovation and the Fontainebleau furniture. But it does seem like they're trying, maybe we'll give them another shot sometime.
If I had to list my personal Top 10 Reasons, #1 would be the nostalgia value. Even at its worst, I always felt like an archaeologist looking around the joint, you can still see vestiges of what was the coolest new place in town in 1971. The beveled mirrors alongside the escalator, the huge 3rd floor lobby, the port cochere. Still some "Union Plaza" signage here and there. It's the coolest!