Has anyone thought of only allowing a witness vote be valid for six months?
It become part of the code and have the added benefit of making people more aware of the importance of witness selection.
I would really like to see each witness make a statement regarding their position of upcoming changes so people can adjust their votes accordingly.

Maybe a general statement as to what the overall aims are, such as:
Encouraging a higher adoption rate
Dealing with flag abuse
tackling the problem of plagiarism
tackling the problem of identity theft
Removing the confiscation of dust payments from small accounts and passing them on to the largest stake holders