Two another suggestions ( I am a heavy cli ledger user http://www.ledger-cli.org/ and find iCompta to be a nice GUI complement to ledger). - It would be great to display transaction comments as a proper TextField and not just a line. (My bank is sending detailed info that is actually contains ...

+1 for AppleScript support - even a basic automation for import/export would be very useful - especially for the management of the metadata (rules, categories, etc ... ) between separate files.