Execute Query (F5) - Run Selected DAX query if Selected, otherwise run All (Mimic DAX Studio & SSMS Behavior)

The feature is related to a development behavior many have acquired over time in which F5 (or some shortcut key) can be used to either run all of the queries in an open query window or the selected query. DAX Studio has this functionality split between Execute and Execute Selection. There are so many times when I highlight a single query of many and press F5 and inadvertently run all of the queries, which can be undesirable. I would prefer some setting or in some way to have the ability of the Execute (F5) to run the queries selected if there are any selected, otherwise run all the queries in the query window. This would mimic the behavior in DAX Studio and SQL Server Management Studio in which I would guess many TE3 users have a history with. I don't believe the current split of functionality between F5 and Shift F5 allows a way to configure the desired behavior - Even if this isn't the default behavior, allowing a preference for Execute to do both would be great.