i2p
The i2p settings/feature us great but 99% of the times I get zero activity when using this setting but when I switch to a lower setting like "*****" my activity up & down jumps into action. I'm not sure what people are not using the i2p setting more but…
Maybe users you share via i2p setting should get double share ration points.
How about a mandatory percentage of seeds will be automatically to i2p to keep i2p alive.
I'm sure other users can come up with suggestion too.

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techguru commented
the i2p should just be on by default
and also in the install for vuze..it should ask you if you want to install the necessary files for TOR to work