About an export dialog for all of rendering

[tkbd]

I'm frustrated a little by the current export dialog for all of rendering with Wings3D.
(File>Render...)

For user it is a heavy footwork with time consumption for the trial-and-error.
(For example, In Pov-Ray's case,I think Wings's export dialog takes time and effort compared to a GUI dialog of Pov-Ray official Application.)

Because Wings3D's export dialog is Modal dialog.
So I have to open the dialog and switch tab and select pull-down menu many times to try change one of setting.
I feel it is like pulling the lottery in the black box many times in until understand all function.

To resolve the problem,it need a preview image(it can ON/OFF toggle) of the simulated result in the current modal dialog.
(For example aslike preview sphere of Material Propaties dialog in "Wings3D" Tab, It is simple model for small amount of calculations)
It also can be simurate in the fog, blur and camera projection type.

This achieve the cycle of rapid trial and error to users and developers.
It will save the time & effort for debug each function.