Personally, I think this creates a much more interesting and enjoyable play experience for everyone involved, whether you win or lose.
Anyway, this is one of the decks I thought about to explore this idea. Having a particular emblem to aim for gives a really strong direction to go in, both in terms of deckbuilding and deckplaying, and means you can still feel pretty good about "doing your thing" even if you lose after getting the emblem down. Lukka's emblem, while kinda underwhelming considering it's the same as an enchantment with the same cmc as lukka himself, is a pretty rad effect to build around, and also maybe not so threatening that people will feel compelled to throw everything at you to make sure he doesn't get there.
Anyway, here's the list.