Arbitrary axis of rotation of the distorted access point

Hi Klaus!
I have a question.

I know how to change the rotation axis of the distorted hotspot using the edge attribute.
But I need an arbitrary point, for example - 25% for "x" and "y" relative to the top left edge.
Using "ox" and "oy" at a glance is suitable for this purpose.
But when I change the value of "rx/ry/rz", I see that the rotation axis does not match the "ox" / "oy" point.
Attributes "tx" and "ty" also do not give the desired result.
Only the "rotate" attribute rotates the hotspot relative to the arbitrary point.
So, it turns out that it cannot be realized?

Klaus, could you please comment on my question? Thank you!

I want to ask you, if possible, could you add this feature in next release.
This important for me and many thanks for this!