Yes, we can offer inter-blockchain functionality using atomic swaps.
OK that's really cool. Do you have a testsite or beta for that? The link you gave seems only to work for ETH tokens. I'm actually looking for an alternative to counterparty's DEX (which is really crap compared to almost any other DEX UI btw).
Specific suggestion for your UI: as others say, leaner/liter. The price history and order history actually takes up >50% on my screen, but those should just be optional or toggled to open and minimize (for me). Keep it to orderbooks and order settings, which should include basic limit/stops.