I don't know if this got picked up later in the conversation, but, yes, it is a very good idea. I have been looking into the same. The network could even "sell" entropy packages, all you have to do is -fake- decrypt them so they are unknown to anyone else; but the source of entropy is still valid.
Even stronger, I believe it should be considered as part of the basic provisions given. Our biggest weakness (second far after user/client weakness) is poor entropy sources for encryption. So it is really important if the network can cater for this - by default. One good entropy packet can last you a lifetime