Hi Zack!
Thank you for your summary!
I am not a videographer, so I can't argue about video features needed or wanted.
But one thing I would like to add
When you said:
I would love to see, at minimum, Canon recreate something similar to their EF-S 17-55 f/2.8.
I fully agree that I'd prefer a Canon OEM APS-C (RF-S) zoom like that.
But you also mentioned the Sigma (and I add the Tamron) offering.
And I wouldn't bet any amount on any kind of f/2.8 RF-S zoom from Canon.
And having the R50 for a light gear and for hiking or travelling, I bought the Sigma 18-50/2.8.
It's so small and great, I don't know if I would think about buying an RF-S 17-55/2.8, even if it has the extra mm FL on both ends.
I am more interested in the Sigma 10-18/2.8 offered with some good discount. And then I will get that one.
Does anything speak against the Sigma f/2.8 zooms for video?