I couldn't love more all the intentions behind this, but I have no idea what it is. Why would someone who already knows and loves Polya and iterative programming and human-centered technology... use this? What is the value add?
but, honestly, I hope that list makes you see why we had a hard time figuring out how to summarize what solveit is. For example, I use it for research and writing all the time, but you'd have a hard time seeing why a notebook plus a private VPS would do much for that use case. But it does! Having a general-purpose computing environment is just very, very useful in a wide range of situations.