Being an older player I may be biased, but Traditional Draft is real Magic. The sets are designed with sideboarding in mind, and you get to have a much better battle of wits with your opponent over three games
Having those Treasures enter the battlefield tapped also means you can't rebuild your board straight away, and you'll need to survive a whole turn cycle with minimal blockers and few ways to stop your opponents from blowing up all your mana if they can
All permanents other than Disciple of Caelus Nin that werent chosen this way phase out
For those curious, I mained dancer, ninja, black mage, and white mage
Contents Twilight Masquerade Elite Trainer Box
If youre looking to fill spots, this can be a good place to look