Karsten:
"But I do fear that their unbanning may ultimately make the format narrower. Before the unbans, we had Grixis Shadow, Mardu Pyromancer, Traverse Shadow, Abzan, B/G Midrange, and Jund as viable black midrange decks. With Bloodbraid Elf in the mix, there may be a risk that all of these decks converge into the same Bloodbraid Elf build. I don’t think it is super likely that this will happen, but it feels like an unnecessary risk to take when the format was healthier than ever. Why fix what wasn’t broken?
Likewise, we had a large variety in blue control decks, including Jeskai Tempo, W/U Control, Grixis Control, Madcap Moon, Grixis Shadow, U/R Breach, U/B Faeries, and U/R Pyromancer. All of them relied on different win conditions, leading to diverse gameplay. In the new Modern, there is a risk that all of them universally adopt 4 Jace, the Mind Sculptor as their win condition. If that were to happen, then competitive diversity would be reduced and gameplay would become more repetitive. I hope this will not be the case."