I am playing around with your citrine tor relay idea. 

Citrine seems to give me errors like invalid pubkey, Eof extension

I am trying to run citrine both as local and as onion service on same phone. 

Also, odd outcomes from putting it both as outbox and as a general relay at same time. When I just select the citrine onion relay as sole outbox the note isn't broadcast. 

But I am manic enough to keep testing away lol