I am also looking for a simple solution to tentage; for 3+ season use. Primarily 3 season with maybe one snow say a year.
Each of my previous tents had a flaw, the quarterdome did not have a footprint/fly option, the Halfdome was too heavy, the SD Lightning had no vent (thus it was a sauna), etc.. and I just dont feel comfortable in a tarp; too many experiences with tics, chiggers, fleas, spiders, fire ants, snakes, etc.. Call me a coward, but I like a couple mils of nylon between me and my 0 to 8 legged distant relatives when Im trying to sleep. Especially the 3 inch diameter spiders which swarm over the backcounry of Japan in autumn.. eeeaagghh..
Of course I want this tent to be as light as possible, and free-standing so I can set it up in seconds, move it out of a puddle, find a comfortable spot, set up on bedrock, ice, sand, snow, or anywhere else where driving stakes is inconvenient or impossible.
The firstlight, and similar single wall tents such as the Bibler, MightyDome, and other BlackDiamond offerings seem ideal.
The firstlight is my first single wall tent, and I am hopeful it will become my go-to tent. I dont know yet if the Epic fabric is waterproof 'enough', but I am hopeful.
You don't need a winter tent evidently, but these single wall tents set up in seconds (literally), and are about as light as you can get.
Sorry to blabber on; you know all this. If you dont have a single-wall tent yet, pull the trigger and try one when your budget allows it?
I could not set up the Mightdome because they were about to close, but the Shibuya location has one set up I think; Ill wander over there after work one day..