Rex Parker

I would also like to know if anyone is working on this? If so, where can I suggest exchanges to be added? If not, what can be done to get...

That's great news about CCXT.PRO merging with CCXT (free version) - it will be welcome by all users of CCXT, and I think we should keep our eye on that...

No! I never did find a way to subscribe to multiple markets on the same call.