DAM with Tension-only members

Are there any plans to revise STAAD so that it will be able to use the direct analysis method (DAM) on stuctures with tension-only members?

In the mean time, does anyone have a suggestion on how the direct analysis method could be simulated on structures with tension-only members.  I get that I could run Pdelta with smalldelta and manually reduce the stiffness by using a lower E or using the cracked properties command.  One of the problems I see is calculating tau-b. What a pain that would be to do manually.  Also, if using ASD, I don't see a way to run the analysis for 1.6 times the loading then divide the results by 1.6 other than writing your own code checker.

Any thoughts would be appreciated.