This altcoin massacre made me ponder what the coin market cap listing should look like, if this stuff was based on real fundamental value and not pure pump-and-dump speculation. I'd put XMR and ETH at a very distant second and third to BTC, since they each provide some very real features over BTC which people are using right now to good effect (though each has problems). I haven't looked into the more recent ones much, though. Are there any others that are backed by more than empty promises?