Whatever way you cut it, a note is ultimately only what it is to its owner.
For selling purposes, this may be a VF25 in the eyes of its owner or to a TPG firm, whose assessment is still only the opinion of a human.
To grade this note in accordance with the CPMS standards (which have been, with the exception of new UNC grades, published in the Charlton catalogues of Canadian money for a long time) one must consider that there is design missing in several places. Under those terms, this cannot be a full VF in any way, unless one jumps up and down and proclaims it so.
The buying bottom line: I wouldn't pay VF25 money for this note. I would pay fine at best, because of its problems.
I also wouldn't bother trying to repair any of the design with a pencil, pen or anything. An educated buyer or collector will recognize this immediately and is more than likely to assess the note a lower grade because it is less original than even with the design missing....