Looks ok, better than alternative profit-switching pools but the profitability calculation method sounds very basic.

You should take into consideration things like:

• Trading volume in the exchanges you use. (i.e will you be able to dump large amounts of the currency without making the price plummet?)
• How stable the cryptocurrency's price is
• How frequently does the cryptocurrency's difficulty update? (Will we be able to mine here for a worthwhile time without the difficulty skyrocketing because of your hashpower)

Basically, I'm not going to mine with a profit-switching pool until they take into account things like this, or I'd be making much more profit mining on my own, manually.