Great!
I tried to find my post about memblocks but failed.
The CreateMemBlockFromFile() function would have drastically improved functionality if there was an Offset parameter (offset in the file) and a Length parameter.
I have already made a media protection system for v2, but it requires the whole asset file to be read into memory first before processing. With this extension to CreateMemBlockFromFile(), I can make it more efficient and everyone(!) will be able to protect their game assets if they use my loader system.