Map Bigger ?

i was thinking about this for so long and I wanted to ask about it here, is it possible to make a map & assets (swep player model, animation, car, etc ) small so you can achieve a bigger map , so everything will be downscaled to achieve bigger map technically (I know this is a lot of work just wondering could it be possible ). ( and of course, putting this side that the map could be FPS optimized to the max. thx for reading