I’ve limited experience of shooting Sony for video, but based on the specs alone, without real pro level grading as in folks that do that and only that for a living…and considering the value aspect, the S5ii is crazy good.
It’s got open gate 6k, anamorphic de-squeeze, the best IBIS in full frame and while many say the image is not quite as good as that of the OG S5 or the S1H, I’d say there is so little in it, it’s not a consideration and something only noticeable if shot side by side with everything identical. And then pixel-peeped etc.
Will there be that S2H?
Maybe, if so, bonus but if someone can’t make an S5ii work for them, it probably isn’t the tool’s fault.