Add the ability to save/load what options you have selected to easily generate new seeds with the same settings. Could also ensure race seed is always made correctly and easily.

Similar to how Span works, we could add a method to the DataStream class to easily create a substream. We could name it Slice and it would equivalent to call the constructor with the given offset and size. This may simplify APIs.

var parent = new DataStream();
var sub = parent.Slice(4, 0x10);

Additional context
We could review the other methods that Span provides so

Allow modified patches to be exported as IPS patches. Modified means that some of the patch records are unchecked in the patch records view.