I think that although it could be a good long term move in terms of security, they would not do it.
This because it would imply changing their service. Users would need to wait 3 seconds to get their orders filled right? Loyal customers could care, bit not the majority.
They are moving great volumes, making a lot of monet, this could potentially risk all of that.
If something is going fine, you dont change it, houdont fix whats not broken. They were ddosed right but i think they wont see it as a strong enough reason.
They want profit, they are making a lot of it and they couod risk loosing it.
They could still move a market at a time, try starting with lower volume coins... Dont know if they would want to invest their time doing it. Honestly i thhink they wont but we can always try to reach out.
The "no" is always guaranteed if you dont ask so