It would be nice to be able to pick a ratio of the length to width of a window. Subsequent adjustments of that window either graphically or parametrically would then follow the chosen proportion.
Many image editors these days have this feature when cropping. For example you want to crop a photo with a 2:3, or 4:3 ratio you can pick that and then resize the crop zone with that ratio.
Would be helpful to speed up modeling and enhance uniformity of openings (if you so choose).
iMac - 2.93GHz Core i7, 4GB, OSX 10.6.7
ArchiCAD 15