I made a short video with thoughts on logjam last.
http://youtu.be/1P0Yg25dtvo
After playing this map a bit i wanna bring up the last cap time again, i think that 4.3-3 seconds depending on 1-2 people on point is way to long, the last is fairly hard to push already and height disadvantage and easy sight lines to the point make it easy to spam and deny the point. Playing point is basically pointless. Please consider lowering it to something more sensible like 1.5 or 2.3 like blands. Going into last and only playing for kills is rather boring to me. Love the map otherwise though. Keep up the good work.