I know what you mean. My 2009 rode like crap with the stock suspension. Very loud on bumps and harsh. I recently put the Ford Racing suspension which rides a little worse than stock but handles much better. Other than a clunk noise I'm hearing now which I'll save my breath with.
IMO your stuck with what you have, I doubt you'll get a better ride out of it. Best bet is to buy a nice, quiet set of tires. I recently bought a set of Continental DWS all seasons which ride alot better than my last set on the car. Better fuel milage too
2014 Oxford white Focus SE Sport Black pack