I just did my first run of the Praetorium, and speedrunners and tomestone farmers soured the experience for me. Speedrunning tanks made the entire first floor a joke, bosses melted, and they didn't revive me when I died, which caused me to be confused after I took the shortcut back. This confusion caused me to miss the entire magitek armor segment (technically I didn't, there just wasn't anything to fight with it by the time I got there) and have to teleport in halfway through the Nero fight, who the rest of them melted.
I'm going to use party finder to get the real first time experience of the Praetorium tomorrow, but I feel that duty finder has too many speedrunners and item farmers for high level dungeons, which makes for very bad first time experiences. Also, I feel like I should mention that I'm not turning in the MSQ for finishing the Praetorium until I get that first time feeling.