I think this is a big NO.We know that every banks aim for one only goal.That is to centralize an decentralize financial system.And bitcoin is a decentralized cryptocurrency and if banks do happen many changes will happen in bitcoins.So i think having bitcoin banks is not good for all of us bitcoin users.
Correct, banks will aim to try to get control over the network so we must avoid the construction of a bitcoin bank, in a way this reminds me of the fight against the creating of an American central bank that happened and we know how that ended the Federal Reserve was eventually created.