Button to quick set opacity to 25%, 50% or 75%
The Slides for Opacity is terrible UX. I have slides with lots shaped, which I want to enable and disable often, and it kills me, that I have to hit the 50% exactly every time ..
Alternatively please implement a text-input for this. Sometimes I edit the opacity directly in developer-mode, but it is not really better :/

This has been changed. Opacity was the only field that was still using our slider input so made sense to converge on the numeric stepper that we use for everything else.
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Alex We commented
Ok, it seems that custom css classes will help me with this. But a button would be better, as this is trivial.