We are hearing a lot about atomic swap (= cross chain transaction processing), specially in the past few weeks.

From a theoretical point of view, I can confirm it is a good start for solving the most important problem in the crypto world nowadays: the need for a decentralized exchange, but I doubt it can be considered a solution or we are close enough.

My biggest concern is scalability, obviously, but there is other challenges as well. I was just wondering if anybody has been studying the subject before and can share her/his ideas with me?

Actually I have been through a very bad experience with a centralized exchange (Bittrex) lately and it has escalated my old anti-centralization sensitivities and allergies about exchanges  .

So, I'm here now, determined to participate more actively (by means of coding, investing, whatever) in shutting the doors of these scammy businesses (bittrex, poloniex, ..., f*ex ) forever and I have a couple of lines of codes,  some coins and a few ideas to share.