Mouse over actions should really be officially supported.

[Shurrikhan]

I still think it's such a small difference that time should probably be spent elsewhere.

It's literally just a slapped-on modifier applied as a blanket, switching its place with the default <target> mechanism.

The game already has a mouseover function; it just requires one to form a macro to use, and macros have been actively sabotaged in this game by having removing their ability to queue (alongside item usage, general actions like Sprint, and other weird exceptions).