It's over now, but I should keep quiet until it's been officially called, so I'll post in secret text.
×The game was already over after Dischorran's last post -- green could only have overtaken magenta with the cooperation of all three players, which was obviously not going to happen. (Blue could have tied magenta, but the tie-break would have been in magenta's favour.)
Who was who? Chaco's last post reveals that he isn't blue or magenta, and those two being in a commanding lead strongly suggests they are the other players' colours. Panther was unhappy with A2 being placed in hex #2, which I think makes her blue?
Assuming that Dischorran is magenta, Panther is blue, and Chaco is green, the position on turn 18 is an interesting one. Panther's actual choice of A3 gives Dischorran a forced win, and so would A5. But suppose she chooses B5. If Dischorran chooses hex #5, Chaco will play it as pictured, Dischorran will choose A3, and Panther then can't win but can choose which of the other players wins. If Dischorran chooses hex #18, Chaco can either play it as pictured (giving victory to Panther) or rotate it, in which case Dischorran chooses A3 next and wins.
That's two very interesting features of the game that weren't obvious at the outset -- that the outcome can remain completely open right until the end, and that one player can easily be put in that kind of position, having to choose which of the other two wins -- which could create a rather complex meta-game if the same players were to play a series of repeated games.
This is only an off-the-cuff analysis, though, and I might be very wrong!
But, don't let that stop you from being creative. 
So, anything you want to change there would just end up in my having to actually design that part 
