Deathtouch relies on a creature dealing damage, in combat or otherwise, so damage prevention stops it
Collector Boosters will still be the home of at least five rares and mythic rares in every booster, with tons of Booster Fun variants, including extended-art treatments and stained-glass textured foils
Disney Lorcana cards each have types based on the origin of the character pictured, and their role in the story - these are varied but include descriptors such as Storyborn, Princess, Ally, and so on
This often results in very swingy matches that favor the team that gets off to an early lead, and it removes the political aspects of Commander, but it'll definitely be fun for someone out there.
It's unlikely that we'll ever truly see Legacy, Vintage, or even Modern on the client just because of the sheer volume of sets that would need to be added