Most exciting altcoin nowadays is Etherum, because it have capital - 18 millions USD behind it. Other altcoins can not even hope about that. So if you check ETH market, you can either buy or sale, and make some profit in one or two weeks. And from technical aspects, altcoin wallet, network and send/receive must work perfectly - this is important, because not all altcoins have good technical background.
Ethereum being 'exciting' is an understatement at this point. It's a Nancy Drew mystery rolled into fucking Lost.
You can't even make this stuff up, people aren't that creative. Freaking hackers and child DAOs and forks and spoons, it's all bedlam.
Again, this needs to be a book/movie. People won't understand the technological part, but it's still intriguing.