I have seen in SNAP V5 that we can export SBAS/PSI to Stamps software that is a very good idea.
But there is a leakage in this idea which is how we provide interferograms and by which criteria we select the pairs for building interferogams.
I think if you provide a tools for providing connection graph according the interested parameters and if we can use this connection graph for processing the image pairs … it would be useful.
Here you will find answers on what exactly is needed for the export module. If you have questions it would be better to ask there because some users with experience read and contribute in this topic.
Some more information is provided in the SNAP help:
SBAS is implemented in StaMPS but the preparation of multi-pair interferograms in SNAP is still a challenge and there is no ready workflow yet. But some ideas were discussed here: Coregistrating more than two Sentinel-1 SLC IW products