That is so very true. The worst part is - I had a prototype in 2012, but never actually finished it until now. Hope this will find its place in enterprise, where every dollar matters.
Do you want to open it up or make it possible to extend? I want to experiment with this, but not having the caching code and SSD handling code for the windows kernel doesn't help. There are no reliable and trustworthy alternatives.
Have you tried to combine RAM and SSD caching already?