There are a couple of Big Agnes owners otp (nikki and Matthew from memory) and I think they're pretty satisfied with theirs, though neither has the "bikepacking" version.
Yeah, my Big Agnes Seedhouse SL2 is still going strong. Initial and 5-year reviews here:
https://yacf.co.uk/forum/index.php?topic=84480.0 JBB has/had a Big Agnes too.
With my
awning and curtain mods I'm indeed pretty satisfied. I've occasionally flirted with the idea of buying another tent, of which the Hubba Hubba and the
Big Agnes Copper Spur HV UL2 are on the shortlist, but I'm not entirely happy with the design of either and there's no pressing reason to change.
The Big Agnes has an inner that looks to be made almost entirely of mesh, so it's probably a tent designed for hot dry American summers, not any-weather-in-the-next-ten-minutes European camping.
My touring's been in the Wet Midlands, up to Lancashire and Yorkshire, and the Netherlands in October. Fly first (you can pitch outer first if you want to) has never really been an issue, neither have the gap around the bottom of the outer nor the low rim of the bathtub. I use a footprint and have had no issues with water coming in through the base of the tent.
The outer not reaching all the way to the ground and the meshy inner do mean it can get a bit breezy inside. Probably related: condensation's not really been an issue.
My bedding and clothing generally keeps me warm enough, but I did find I wasn't that comfortable with the breeze around my head, so hence the curtain mod. I haven't got any photos to hand, but it's just a strip of lightweight windproof fabric about 50cm high and long enough to go around the circumference of the inner, hemmed and with a few buttons sewn on the hem. On the seams of the mesh inner I've added small loops of nylon cord to act as button holes. It mimics the non-meshy section some tents have between the groundsheet and the mesh and just means that I'm lying below the zone where the air is moving around. The original idea was that I would use it for colder weather camping, but in practice it adds so little to the packing size/weight that I just leave it in all the time.
Probably more effort than most would go to, and almost certainly not a solution for the OP, but posting here mostly just to highlight that things can be tweaked if needed and compromises nudged in one direction or another.
FWIW I rate the Big Agnes build quality, although a friend with a 1-person bikepacking tent has struggled to get theirs pitched taught. I seem to remember this was a common complaint with that model.