This is a fantastic concept. I'd be keen to help also, and have plenty of powershell experience.
I'll explore the projects you've linked too
I’ve had a lot of exposure to Compuware’s APM User Experience Management (UEM) of which must be the worlds most expensive product. Short story, the product is crap but a great attempt at almost nailing such an amazing concept. We used this product on several transaction robots (aka remotely deployed PCs with agents running on them) which would use a combination of screen scraping and other smart techniques to run user transactions. These metrics would then feed back to the APM server for processing to display onto a magnificent dashboard. Nice if it actually worked without so many bugs. In my opinion Solarwinds knows only too well that marketing such a product would mean having to get it right the first go. Getting it wrong would be marketing suicide.