In addition to the great wishes about "hiding accounts (balances)" and "show the sum of multiple account balances", I would like to add another great features wish: grouping of accounts.
For example: I have accounts for expenses, accounts for savings and accounts for direct debits. It would be nice if I could create groups like "saving accounts", "expenses accounts" and "direct debit accounts"; and add accounts to it. The idea is then, to show the accounts per group in the accounts overview. Makes the overview easier tot read instead of having all accounts listed in ons big list. Additionally a sum of all account balances per group can be shown there.
Hopefully you will consider this :)