thanks for the reply Mike
"now shrunken image in Spriter to be 1.0 in any key frame that changes it's scale"
that is what i ended up doing, but it ruined some animations that had to do with scale and origin point.
i ended up sending back the spriter file to the designer to re-do some of the animations.
not only that, changing origin point caused the "generate sprite sheets for project images" to generate some pngs 2 times, rather then 1.
next time i will demand that all parts of the animations will have the same proportions of scale and trimmed when imported to spriter.
i do not know your priorities, but i do want to point this things out for potential features on your next update one day in the future.