Not yet! I'm not using convnets or backprop or anything so I don't think it would be beneficial that way, but you could get something similar to what I'm doing by looking at Fritzke's Growing Neural Gas[1]
[1] http://papers.nips.cc/paper/893-a-growing-neural-gas-network...
Rad! Do you have any examples (or literature) that explains when this is beneficial?