I'm not sure about the justification for launching mixers for other altcoins.
Why? I don't see any problem to have a mixing service for other altcoins.

If other directions were made, such as BTC to ETH or XMR... It would no longer be a mixer but an instant exchange. A completely different business model.
I think you missed the point.

As far as I know we don't mix BTC to ETH. We send our BTC/ETH from one wallet address to a new wallet address.
If you want to switch BTC to ETH, kindly go to spot market on exchanges.
At this moment RomboMix doesn't have any plans for other altcoins! As I said before, they are only focused on ETH and BTC, developing the current system, improving anonymity. A lot of things are going on under the hood! You just have to patience 
Okay, no problem. Focusing on 2 coins is good idea, just optimize the existing coins firstly.
Sure, we will be patient!
