Flavor and tone aside, there are strong mechanics in Duskmourn with manifest dread, survival, and rooms
FromTheShire: You really want Arachnogenesis or Rootborn Defenses, but in UW control decks or similar where you're already holding up mana this is certainly powerful
The release of The First Chapter exceeded demand, with players struggling to find cards
general lack of availability of raw materials or energy
The deck includes key tribal elements such as Daleks, Cybermen, and artifacts to synergize with the Commander's abilities
The only thing I can think of that stands out as a notable mistake is Thran Portal, which did not need to be that aggressive on entering tapped