@numerobis said:
I don't know if something like this already exists for Sketchup, but i think this would be a very useful one for all archviz people...
http://www.cg-source.com/floorgenerator.php
http://www.ronenbekerman.com/using-floor-generator-script-by-bertrand-benoit/
Not sure how the multitexture thing could be solved but maybe simply by using various sketchup materials.
I don't know how difficult it would be to do something like this for sketchup but when i look at all the incredible existing plugins this looks like a "relatively easy" one for me...