Alright, so I was working on this thing for a while and I thought I'd post it since Brian posted his...
...I've been playing a lot of Elder Dragon Highlander in Magic lately, like a ton, and one of the best things about the format (other than 100 card decks and no repeats) is that you get to play with a bunch of awesome cards from old-school sets. Legacy isn't quite as fun as it could be since a lot of the best cards are banned, but that is to be expected. So my format is simple:
-75 card decks, on the dot, +1 for your character card.
-all Highlander, meaning no more than one copy of any card.
-All sets and promos are legal if they have been released officially.
-There is no regular card banned list! That's the biggest draw. The only cards that will be banned in this format are character cards - currently I'm thinking Cassie, Zas, and Hugo and that's about it.
That means if you want to Dark Empire, heh, go for it. There's only one of each. If you want to do stupid Double Dealing loops, knock yourself out. Same goes for Turbo or anything else, and if you want to smack people with that To The Bone, have at it. And yes, you get to use your Addes/Lolidays/Revit again - once, anyway, without recursion - or wait, you drew your one Military Rank!
What do you think? I think it's a fun and amusing format that can abuse all sorts of things but not very consistently, and still play fair as mill is much harder to pull off with 75 and if you're smart then you can easily plan for and avoid comboliciousness. And I know a few cards that get much stronger in this format (hello, Giradot's! ). I'm going to build a few decks and see how they play on Saturday...but feedback would be nice.
The only card I might consider banning normally is Military Rank, and that's because it's so abusive and easy, but I'm not totally sure whether it needs to go in a HIghlander format as there are plenty of ways to deal with it and very few ways to recur it.