It's simple as that, as a micro, you could climb into a "mech" that is simply a prosthetic body and pilot it around and interact better with normies (normal sized people).
This could ICly allow micros to work at physical jobs without having to make up some blue-space excuse... Micro miners, janitors, security... All career paths would be opened to micros!
As a side note, I think it would be really awesome piloting a prosthetic mech made for micros and then some predator robust my mech, break it, and patiently unscrew the cockpit and take me out for playtime and/or noms.
Now as an extra idea...
Some people would think it's overpowered thing, giving micros the edge in game mechanics, which trolls would love... But since micros would have these "mechs", like an extra "life", we could then actually nerf the micros, make them slow, have low HP, unable to carry big objects, etc.
There's a similar topic regarding micros piloting tiny toy mechs, available here.
This is how I feel micros on-station to be like at the moment... https://www.youtube.com/watch?v=Lc9_H7mZxCI