Been looking to build a 4 person (2 adults and 2 kids) camper for a while now.. Researching, researching... and more researching. Going to do a Raindrop style, stretched to 6 wide, and 5 high, with about a 30 radius at the front for the kids bunks. Total of 10' 6" long. This will be a build with my dad, who is about to retire, and wants something that him and mom can camp in as well.
I have some basic sketches that I am working up. I have been fighting with sketchup for a while now. But I should have something later tonight.
EDIT : 7/6/14' This is where we are to this point.

edit.. it isn't much, but you get the idea.
I think I finally found a person locally who actually wants the business of building me a trailer frame, axle, wheels tires and tongue with coupler.. nothing else. This has been a chore, as everyone either wants to sell me a ready made trailer that is made of angle iron, which I will have to chop up (and not be near the strength of 2x2 tube) OR.. I get the "what is a teardrop trailer?" or "why don't you just buy a pop-up".
I don't want a pop-up... I want a family sized teardrop... I've studied the camp-inn raindrop A LOT, and have various aspects of others builds that I will be incorporating in to the build.
I have the newly found trailer guy getting me a quote now.. sure I will have to "tweak" it a little, not sure still if I want a flat benroy style back, or radius at the bottom. If I go radius at the bottom, I will need to shorten the back of the frame a little to account for that. I'm thinking that the radius at the bottom with shorter hatch might be good since the cab is 5 high/6 wide. Not sure if taking it all the way to the bottom will make an unusually long range of motion/heavy hatch? BUT I do like the slide outs at the bottom if the hatch goes to the floor... decisions, decisions..