Othe, according to things that smooth said about problems with nodes bandwidth overhead, this i2p implementation looks really strange, since it definitely make this also slower.
I have no doubts that you informed about all issues and would be happy to see a result when you finish that.
The I2P network is designed for interaction of persons making transactions with main nodes without revealing your IP. It's not intended for general use (we will continue to use the normal P2P code for that).