Just a quick thing...do you know if entity and persona are the same thing? I'm just slightly confused by the term...
Whenever I get a PBN, what I've done in the past (to make them look more "real") is create public whois information with a fake name, but real address + city/state, and I'd create a number of profiles (Web 2.0, social, and a G+ account) to make it look "real" and this helped my PBN's avoid deindexing.
I would recommend doing it on your main website just because it helps with boosting your domain authority in general (and helps with deindexing), but this is the first time I've heard about doing it for your main site/money site.
For the most part, I try to get everything "matching" (I guess they call it "branded"?) w/ names, cities, addresses, etc. and that has helped.
This is first time hearing about doing this for main site or for rankings...
But I can highly recommend doing this for PBN's.
