I agree that the camper needs to have windows on both sides of the cab over area to get that nice cross breezes. I too immediately rule out the campers with a cabinet on side of the cab over.
The front window is one I can take or leave. They are prone to leaks and can be cold in the winter, but careful maintenance and a piece of Styrofoam fixes both issues. However, being able to lay in bed and look out the front provides a great view while staying snuggled in bed.
By the way, we had a 69 Franklin 11' which I looked out of for miles and miles as a kid. Wouldn't let kids ride in the back today. When it finally started falling apart from rot, my father carefully took it apart with plan on rebuilding one from scratch. The sides were rotted, but there was no sign of water damage around the front window - except for some slight damage due from condensation.
Looking for a slightly bigger used TC and if I find one with a front window it won't keep me from purchasing it. Only thing I would do whe I get it is to pull the front window to make sure it is properly sealed and hopefully replace it with a thermal window.