The only downsides I can think of are that you have a potential for leaks, but I haven’t seen that happen in a long time, and you will have less headroom than with a vehicle without that option. So, if you are particularly tall it might be an issue.
I’m more positive than “meh,” but I def don’t think it’s a must-have. I think MB had the best implementation, IMHO, w/ their non-pano sunroofs. The sunshade are vents, so you could tilt open the sunroof and get some ventilation w/o having to open the sunshade.
Who said anything about opening it before dusk? I rarely open it before 5pm, definitely not when the sun is shining down directly (why I don’t lease a drop top).
I would also wager I’m in the 99th percentile of LHs who visit their dermatologist(s). I’ve been twice since March with two more visits before June programs end.
The erstwhile Ford CMax, an otherwise ugly exemplar of function/form, which I leased 2 different ones. It had pano glass (an option I paid more for, twice) with retractable sun shade. Still nice to get a little light through the dome but I prefer the fresh air, especially now in COVID traffic I prefer the roof open and the windows closed. If the Pano roof opened and it got the nosejob the Eurospec got it would be perfect. If Ford still made them last year I might have leased one instead of the Volvo.