I remember Bittrex were about to add it and then the issue with the rollback emerged.
As far as I know, Bittrex was talking to the dev quite recently.
If that baby goes to Bittrex, this will be going to 1 USD per MRAI easy/
I think that a new exchange is the last thing we need, since it's almost tradable on 2 exchange.
The main question is that the nice next step should be release of a light wallet (desktop + mobile) and involve services to use it.
Until that point the situation will be almost the same, even if we get on Bitrex, even if we get on Poloniex.
Just a (personal) consideration about the market and the current price. I'm happy to see Mxrb on 1300sat, and I'll be more happy if it reach even more. But don't forget the price is driven mainly by tools and use cases, which are very limited for the moment.
Put effort only on make price bigger will make the price only a big bubble which can burst every moment, since now, except hype, I don't see any reason to be fine with this price.
Bigger exchanges have gained more trust within the crypto community. It's clear that the project is legit and that the codebase is valuable, but most people wouldn't even look at it without some businesses trusting you first, ex: exchanges. After exchange additions you will get news outlets and potential investors to look at you. It's just how it goes and it is needed for every healthy project.
Sadly BitGrail and Mercatox just aren't there yet, most people in the cryptospace won't trust them without a good track record. I bow to you guys as BitGrail looks and feels excellent between exchanges, but it's still pretty new and not load tested.