Yea I love this site wish they had when reward drop is coming. I'm hoping someone has mad this site but maybe not.
Did you try to contact the site owner?
Maybe the site owner is willing to add the reward drop information if you ask for it.
It is extremely hard to make an estimation on the future mining profitability for altcoins.
First, altcoin prices are many times more volatile than bitcoin. You can see prices going up or down 20% a day regularly.
Another problem is that, the hashrate of a particular altcoin is very unstable. The miners come and go when they find a more profitable coin.