Actually, in SACS we have the option to exclude group elements when we use the weight option "footprint weight" by the card EXCGRP (Footprint group exclusion), but sometimes the group list to include is shorter than the exclude list, it will be great to have an option to switch the functionality if the card EXCGRP to avoid called the list to include
A group include would be helpful. I would be nice if the developers would develop the weight input functionality as they have the load input functionality in Precede. Using weights is extremely helpful, and more accurate, when doing dynamic analyses. Basically, anytime that the vertical CG maters weights are the only way to go.