I remember our old canvas tents from way back, poles of baseball-bat thickness, and canvas that smelled of creosote, though I seriously doubt yours is that old.
For non-backpacking tents, some of the prefs I've developed over time:
A roomy tent, or two if necessary. Forget putting 6 people in a tent that "sleeps 6" 8^). Getting caught in a middle of the night rainstorm is a lot more pleasant if you don't have things or people crammed against the sides, which can cause leak problems. I want to be able to get off the air mattress(es) and be able to get dressed comfortably. So that means a decent center height (nice if you can stand up when you want to).
Some newer tents, as you mentioned, have screened windows all around, some without closures, and depend on the rainfly for both privacy and shelter. I didn't like the idea when I first saw it, however I've found that the tents stay dry inside...no condensation in the mornings, and even bedding stays drier, I guess because of better air exchange. So instead of being colder because of air circulation, you're actually warmer. Tents tight enough to block air circulation will be wet inside on a cold morning, even with roof vents. I've used mine down to about 18 degrees and in rain and snow with good results...nothing beats that rain sound in the middle of the night when you're secure and dry.
Coleman tents aren't too pricey, and I've had really good results with their newer ones at staying dry inside in a storm (I generally use a plastic tarp underneath to protect the floor). No doubt many other brands do as well or better though, just make sure the floor wraps around from the bottom, and the rainfly covers adequately. I guess a big tarp and rope is still nice insurance to have along, in case you get in one of those 3-4 day storms, but usually not needed. One thing I appreciate about Coleman tents is they give you a bag that it actually fits back in once it's been used the first time 8^).
A few other things I do for staying comfortable when "car" camping...in cooler seasons I bring a small 'Sportsman' propane catalytic heater, which uses very little fuel, and is just enough for a few minutes in the morning to get dressed and washed up by (I like to avoid campfires and that heater feels really nice on cold mornings). I also have a small bathroom-type carpet, maybe 3'x4', that feels a lot better to stand or sit on than the tent floor.
Anyway, don't be afraid of the newer lighter tents, you'll probably find that you're actually warmer and drier than in the canvas tent, and they sure are nicer to haul around.
Gary
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