I own a personal account and a joint account, and I switch between them very often. Firstly, it is not very obvious to recognise which account I am currently in. Secondly, the path for switching between the accounts is quite bothersome. Especially, if I open a business account or an additional joint one.
Would be nice if there was either a drawer from the left that would list all accounts, their name, photo and ballance with active one highlighted. Or above the ticking graph with a drop-down that lets you switch the account. Or as a bubble - like the search button on Android that would display the photo of the active account.
Also, maybe each account could have its own color scheme - like Trello boards.