ETH still a King!!! i will focus to it, thankyou!
King of Altcoins? I think no. King in my opinion is meaning like a highest price of Altcoins.
Better i call ETH is Father of Altcoins. Because most of ICO use ERC Platform.
The highest price is not the basis since low supply usually have a high price.
Maybe we can consider the most profitable altcoins in the market, and I think that's not ETH but we love to call it king since it's next to bitcoin.