Your site looks nice and easy to navigate, 9 out of 10 for the design.
About ETH mixing, this is the first time I see a service mixing altcoins, if you are serious about your latest updates, you should update the signatures/ advertisements to reflect these new changes.
Now what if I wanted for more added privacy to send you Bitcoin and receive ETH or XMR? You know just like there is a fee to be paid, I guess I wouldn't mind paying some extra fee just to make sure there is no link between my coins. Of course there will be some issues regarding the exchange rate between the 3 coins, you could use either an average price, or pick a service/exchange as reference for the price calculations.
Ordinarily we can't simply use decentralized exchanges to do this kind of mixing ourselves, but since you already have the infrastructure in place, it would be a useful addition and a competitive feature.