my tent before my current one was a single hoop design with the ends of the hoop at foot/head the inner was mesh roof and solid inner half-way down to the bathtub. When I sat up, it was drafty, made the shelter not as warm, but wasn't too bad laying down. It had a fly flap which kept rain out of a roof vent which formed part of the guying system. I didn't have any real condensation complaints about it. It was heavy, 2.1Kg, and I broke it from years of use. So I think from that experience I quite like the partially-solid inner with roof vent concept, so long as the geometries work out good and I'd say that is good for above-freezing situations where you don't want to over-heat in northern latitudes with morning sun from 4am.
The tent I had after that is warmer, it has less mesh and the fly has no roof vents but its got such a terrible condensation problem, plus looking at angles it can't get a tight pitch quickly. 1Kg though.
So what I've done is beef up the sleeping bags to better quality down rated to cooler temps, and just now new a partially-solid-inner Tarpent. I'll give that a shot, I'm willing to accept might be a mistake but since when doesn't anyone stop learning?
The issue of tent weight, well that's quite a bit related to your body shape, your height, your weight, and the relative upper/lower dimensions. To make my tent warmer in colder situations I moved from Prolite to the thicker mats but it then just took the just-right headroom to too-little so I've moved to a higher roofline.
Also, I'm not sure a single shelter for the winter is right for the summer, I know there are tents which claim this, e.g. pitch inner-only but I've yet to be convinced and I'm assuming its at least two shelter types needed for full spectrum.
I used single-skin 30 years ago, never again. Some like them.