I've just sold our camping trailer. It was a good one, nothing wrong with it but the lure of ebay and the trading post was too strong.
So now I'm trawling through ads looking at possible replacements but the options are too great. There is one for every purpose. Check out the one in the pic - the possibilities! You could bolt anything on to that.
I think the only solution is to buy several and have one for the various occasions that camping throws at you.
One of our mottos here at mycampgear.com is 'One camping trailer is NEVER enough'.