Yep, I was thinking about this some months ago and already started researching how CPU / MB temps can be retrieved, even looked at possible fan speed control.
It doesn't look easy, and I don't think it would fix well with the Scanner. But it would fix very well into our upcoming StableBit Cloud. The StableBit Cloud will be all about system monitoring so that would include MB / CPU temps and fan speeds.
Let's not get ahead of ourselves and call this product anything for now, there's a lot on the todo list already. It's just an idea at this point.