Option to display multiple accounts on main screen

I would love to be able to switch between my multiple accounts from the home screen, perhaps just with a row of small icons in the upper left where the "current" avatar is shown now. In an ideal world, I could choose which to display of the multiple accounts I'm connected to in the settings (ie. I may want to have four accounts connected but only three shown in the account switcher on the main page).

Start by tracing the current avatar and account-switching entry point on the home screen, then inspect the settings flow for connected accounts. Done means users can choose which connected accounts appear in the home-screen switcher and switch among the selected accounts.

Written by the indexing model from the issue text.