Those rain effects!

I would love to see rain effects in the sim but I find it falls into a similar branch like the clouds. People are genuinely hyped about any cloud they see even though it might not look that realistic. Rain effects are similar in that regard that people freak out as soon as a raindrop moves across the wind screen. But the overall physics behind the drops may not actually be correct which I find is very disturbing.

The rain drops in this video are good but I think one could do even better. The speed of the drops rolling back shouldn't really depend on how much rain there is. Once the wind screen is wet all drops should fly aft even when the rain intensity decreases. In the video you sort of see the drops slowing down as the rain is less. And the small droplets left over would evaporate quite quickly due to the 220kt wind they are exposed to. So there is room for improvement but overall the effect is looking quite good.

In the video, I like how the wiper actually works and how the drops reflect the wiper

Well I do love high quality, that is true And I'm almost as fast programming the "perfection" as programming the "good enough". So I usually do the extra 10 to 20% effort to be able to say: I probably will never need to touch this again. So saying that if you aim for high quality things will "never" be finished is actually not true. I find the "perfect" in programming often doesn't require that much more work. But that is just for my aircraft systems, shader stuff gets a lot more complicated I think.

In regards to the rain drops in the video: I don't think it requires a lot of additional effort to keep the drop velocity high when the rain intensity decreases. But I don't know how they create this effect so I could be totally wrong here.