Damn, I'm feeling this thread in a major way.
There's a lot about 1v1, 20 life formats that I've been missing recently.
I love commander, but there's so much that just isn't viable and a lot of it is how I like to play magic.
To me, Commander feels like a game of Hungry, Hungry Hippos. There's a lot going on, everyone is going nuts and what you do kind of doesn't matter. Who comes out on top is often as much about luck as anything else.
I'm missing that feel of a
battle of wits that comes from 1v1. It feels like chess. Every decision matters. It's just you and your opponent. You're punished harder for playing badly and rewarded more for playing well.
This is, of course, all coming from my own perspective as a far more casual player. I'm very aware that higher power EDH is much more like chess and much less like Hungry, Hungry Hippos, but there isn't much appetite for it where I live or in my playgroup.
I've really got into Canlander recently (and to a lesser extent Gladiator now Arena is available on Mac) and it's made me miss 1v1 formats. I love the 100 card singleton of commander which is why I like Canlander. Your deck has to be a swiss army knife. No sideboard, no pivots. If it's not in your deck, you can't do it.
As many people have already covered, life points matter more, combat tricks are viable, aggro strats are actually good and damn I miss all that shit.
I miss casting
Glorybringer and
Ahn-Crop Crasher and them actually affecting the game. I want to play Jitte in a deck where it can actually make a difference. I want
Lightning Bolt to be good (although to be fair I do still play that in EDH too).
I can't remember the last time I did a draft where I didn't just jam Rakdos aggro. It's how I love to play. I like killing shit and turning creatures sideways, and it's just not as good in EDH.