"(A)What are the forces that the wind exerts on a tower and
(B)are these forces evenly distributed?"

A. More than you might think!
B. No. Depends on the particular configuration of the tower's load,
and the strength/speed of the wind. Infinitely variable.

You already know that there's no 'good' solution for one set of
guywires. The 'best' solution I've heard so far is an excess of
insurance and a gulible claims adjuster.
'Doc