I see fabric being used on small lawns with various patches up to 100 sq.ft. or more... that is probably the best cover possible, even to rival compost, but the largest roll I ever saw of it , only opened up to 10' wide... I've never used it for lawns myself, but I have seen it out there... I've used it personally in the garden, years ago and know how it could benefit the seeding environment... I would still opt for shredded straw on hillsides instead, just for the convenience... on the flats I do none of that...
Now that I know that clay's texture(platelets) has nothing to do with water infiltration, percolation, or drainage,,, I wonder what does...