Odd as I've come across rain of differing intensities in Pcars, from light to a heavy downpour, my copy also scales the duration of the weather to the length of the race so running full length races has never resulted in weirdly short rain (not that short rain showers don't happen in reality).
Of course it would be nice of PCars varied the weather in career mode (however in other modes you can of course set it however you want, including random), it does however seem a little odd to call out PCars for this given that GTS will have neither variable weather or a career mode!
I know this is a bit late, but my time and energy to spend here have been limited this week. Let me start with mentioning that I've been in a couple of pretty bad wrecks over the past few years, one involving rain. It took me quite a while of driving in rain in real life to get comfortable with it again, but driving on snow still terrifies me. In-game snow courses are fine, because they are all wide sweeping affairs, but racing in rain is extremely demanding and still pretty much flat out, and it bothers me quite a bit. Particularly in games which have sometimes iffy communication between me and car, which PCARS is for me. I HAVE to have those tire sounds, and they're just too darn quiet.
The issue I have with PCARS' weather system is that it's a carbon copy pasted over every event. Whether practice, qualifying or the race itself, if not more than one of them, it's going to rain, and pretty hard. Just that point makes it weird, but then the way rain behaves on the track has to complicate things. The article that critiqued PCARS states that for him, the slickness effect is much too rapid, as is the drying effect when rain stops, almost on/off. And I could see that, because I'm hesitant to really push cars because of my wrecks, and I don't feel comfy around turns until road moisture is just about gone. But seriously, it's every damn event. It's not the ridiculous deluge in Forza 6, but I've never experienced light rain or drizzle. Maybe one of those patches changed things up, but I'm betting the frequency is the same. I got so sick of it, I quit the campaign after a few virtual months and just did arcade races. SUNNY arcade races.
As for GT Sport's weather system lacking variability, I'm obviously not fond of rain in any form, so I'm not chuffed about it. No time variability is something I'm sort of missing but not, as mine is always set to 1 in my GT6 plays, so it's practically fixed anyway. But the lack of a single player mode, it depends on what Sport has on offer. I could be entirely happy with a well fleshed out Arcade Mode, as that's essentially how I'm playing GT6 now, and if I was playing PCARS and Assetto Corsa, I'd be doing nothing but Arcade events. Hopefully we'll have some more solid info at E3 this month.
you can see the graphical detail in these cars are going to be so much better than GT6 even with video this taken off screen and on you tube they look great. Nice song as well to go with it 
