My need is to be able to have a place to add notes, but not notes related to a transaction.
For example, having funds in a network that Koinly does not yet support, so that when tax time comes around I would have in one place all those things I need to keep track of that I have written down during the year.
I think adding a page where I can add notes could be a quick MVP solution and would be great.
An evolution could be link notes to wallets or specific transactions, even show all the notes associated to transactions in this section.