When you play a Solemn Simulacrum and the game is not a race against time, your opponent winces for he knows how much harder his job just became
Theres a real challenge to be had in 1v1 Commander, and honestly the approach is similar to how people approach traditional Commander
It adds more physical cards sets and art, is set for regular content updates, and lets users customize a player avatar using in-game accessories
Or you could just play Harmonize or Concentrate and not have to worry about removing cards from your graveyard
Over time this can wear and tear on your cards, decreasing their lifespan and condition
All things considered, I think you can argue that Invasion of Ravnica is anywhere in the A- or B-tier range, although I'm going to aim high and put it in A-tier