If they just came up with some sort of overgrip it would have been so much better, cheaper and easier than manufacturing a whole racquet.
[h=2]why haven't the Thwack rackets caught on?[/h]because the "fundamental improvement" is just a unnecessary gimmick no one needs!?
Plus there has been bad experience for an European pro player who sunk quite a bit of money into supporting and distributing the brand but ended up losing the money. Edit: Finnish player Ville Lang.