“You can use all the quantitative data you can get, but you still have to distrust it and use your own intelligence and judgment.”
Alvin Toffler
As an OSS vendor, how many of your customers operate in different sectors and don’t compete directly with each other?
If the answer is a high percentage then you may wish to consider benchmarking to find out which implementations have excellent benchmark results and cross-pollinating those ideas into your other customers.
To an extent, this happens when your integrators move from project to project, but when you conduct electronic benchmarking it is possible to supplement that qualitative data with quantitative data.
To extend this, could you provide connector sessions to allow your customers to share knowledge between each other?