They pledged themselves to list five more a year ago. Let's keep hope they will do it this year

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We'll definitely update the post on another forum since our plans have changed since. We will only support well estabilished and well decentralized networks. Supporting tokens/coins that appear and disappear is not something we would like to do.
Hm, I don't aware of Bitcoin Lightning token but other four that you have promised to list in the previous year are quite sustainable decentralized tokens/coins. I don't see any reason why they should disappear even in the long term perspective. Anyway, whatever the cause of cancellation of your past plans is, from my standpoint, by limiting the number of coins available for exchange you are restraining your business.