Thanks for the interesting photos. Good analysis. You do have a lot of trees in your most needed direction. I don't see an easy solution. The antenna needs to be where the signals are, and the trees will continue to grow.
An Antennas Direct C2V might look a little better from the street. I wonder if it has enough gain if you can get it high enough.
(I try to limit the width of my photos to 800 pixels. Otherwise the post gets too wide and then the type is too small.)
Wish I had a better answer for you.
73,
W4...
ex-W2...
ex-DL4..
Once-upon-a-time, many years ago, there were no trees.