Something that’s very useful for micro and macro is seeing the individual units and their relative health via color (green = healthy, yellow = injured, red = severely injured) when selecting multiple.
AoE 4’s unit selection isn’t very accurate when trying to click+drag with precision. It’s easier to separate units into groups, micro injured units to the back-line, split up workers, etc.
Like is to an example of AoE4’s to SC2’s.
Cheers.