"I am thinking in terms of an electric element fitted to the leading edge,"
There are 2 companies in the US that have developed such a thing. One company already certified it (for the Diamond) and the other one is a one-man bend who came up with a very cheap and lightweight system (that seems to work) but I don't know what stops him from completing the project.
I am only aware of one system (EVADE) and it has been certified on the Columbia, not the Diamond.
Ian