I use the "Transaction Journal" style (Prefs > Register Defaults > Default Style) to constantly compare splits between months.

Although this mode is the most useful to me, as the transactions start increasing, it becomes tedious to find a specific transaction and overwhelming to look at all the available information when you're scrolling through.

It would be extremely useful to have a toolbar button that toggles between the existing "Basic Ledger" and "Transaction Journal" modes, which would act as a "Collapse All" / "Expand All" option for all available transactions.