Monitors and full range?

To add to "Dave"'s response, "monitor" often meaning a small, revealing, heavy-duty speaker that will fit into tight spaces or on top of a mixing board, usually used very near-field. Today's powered keyboard speakers that sit on top of a keyboard would sort of fit the original bill..
Weren't the old 70's Roger's cylindrical speakers designed this way to fit into a mobile recording unit, in a van?

Today, I believe the term is used for speakers that sit on a stand to reach ear level and usually have limited bass response, either by design or the fact that they are away from the floor, which reinforces the low end frequency response. Few stand mounted monitors reach as low as floor-standers, which may not be a bad thing, depending on how much bass you want.

Some monitors are full range and very large like atc or pmc.

Can sub/sat (monitor + sub) combo make it easier to achieve quality of 'flagship' full range offerings? Or does integration just not compare?

I have pmc mb2 - I dont need a sub. Sub sat can work but trickier as you will have to choose carefully and site carefully to get good integration.