I don’t know the details of that idea, but SAFE uses a relay_node for the client side already. So no need to use any more proxies IMO. What I got from the proxy thing we have right now, it that it’s a workaround because we mix SAFE with the main internet at the moment. If we have a browser to just surf SAFE no need for any proxy.
Another thing that comes in my mind is avoiding to much functionality. People might like a bridge and whatever with Firefox but do we really need it? People can run Firefox if the want to surf the normal internet and the SAFE browser for SAFE. Building bridges between the 2 might add safety risk.
Great to see you are working on this project btw, much appreciated.