Nevertheless, the size of the board is not serious, the game could be far, far, far more interesting if it was played on something like 7x7 instead of 5x5.
Back in 2005, I had the honour to publish ConHex in my little 3-Hirn company.
It was a great success on the Games Fair in Essen 2005, and Michail Antonow was able to convince the big company by Ludwig Gerhards to publish a noble version of the game, with a very nice wooden board.
Gerhards was so kind to make a special large board for my group. We used it at the CEBIT 2007 fair, and in the long night of science in Jena:
I've always been open for more variations if it brings something extra. It might be interesting to play larger. Sometimes I think this board is to small (mostly I like the fast game as it is).