Banks will never support the crypto currency trades and neither they are approaching that way toward them. The wire transfer is completely different thing and that gets separated with the membrane of decentralisation and centralisation.
Regulation may change a lot of things though. We already have exchanges and they are serving as banks in most countries, at least in mine, I have Luno and it has been pretty effective, I believe in the long run, with regulation, most banks may come up with their own exchange platform. As long as they are gaining from it, you think they will just keep a blind eye to it? No way.
in these few days I think most of the bank will not be friendly with these cryptocurrency,but as time goes by,they have to accept them and adjust them。
And why is that? Who even need them to be friendly anyway as it is not like we have not been doing well without them. Banks will not end up seeing cryptocurrency as threat in the long run, and with the issue of conversion to fiat, I see banks also filling those gaps in the long run. There is a great benefit for them and as long as there is regulation in play, and they are given the license, why not?