Some interesting takes here.
I agree that the big exchanges are not going to move on this overnight. You need exchanges that have little substance to them as they are now. Criteria to look for would low to no volume, and small user base. These smaller ones might be an exchange for some particular alt coins that just don't have any other exchanges supporting them, and that is what keeps a small user base running to them after their coin got mined and the miner wants to convert to BTS.. whups.. BTC.
Anyways... why don't we do this coinomat style? Lets make it a contest! Lets have some fun with BitShares.
Create as big of a list as we can.. of all the small exchanges.
Create a site like coinomat where each exchange is voted in BY ANYONE INCLUDING THEIR USERS.
The WINNER will get an official invite and offer to be put on the 2.0 Super DEX
This is just one way to do it.. but the point is not to be reaching out directly to the exchange, but get their user base calling for the move... ultimately they are going to decide what the exchange is going to do, and if you can get them calling for this, then they will do it.
This approach is what will move the bigger ones as well. When we reach a tipping point of more users or large group of users using the Super DEX, then those users at other networks are going to cry out for the move because now their liquidity is not looking as hot as they would like it to be compared to what they will see here.
We don't need to do a coinomat btc to vote type contest either.. we can just make it social.. like/tweet stuff perhaps for example.. anything that sends a clear signal from users that the exchange that is named is being asked by its own users to do this.
Anyhow.. this is how I think it might be more interesting in the approach, and will garner better support at the right pressure points.
for starting this.