If UMA is a success, we could see a bright future of more Masters-esque draft-focused sets, or we could see the rise of ever more expensive premium products as Magic embraces the Whale model of free-to-play gaming (which is ethically fraught territory, but not altogether bad)
The best discard commanders are the ones that turn it into something beneficial, although its not always just you or your opponent whos throwing away their hand
Cards like Psychic Frog help you get Atraxa into the graveyard, and from there, reanimating it will net you a bunch of life and resources
Like the previous options, Orah supports the Sacrifice and Lifegain themes of Cleric Tribal, but focuses more on Sacrifice with a powerful reanimation trigger
With its Fast Healing ability, you can discard two cards to return Old One Eye to your hand on your precombat main phase