Your PBN's Quality - What factors are you using?

What are all the factors you consider while building your PBN and consider it safe and good to boost your money site's rank?

Foot Prints:
IP
Domain Registrar
CMS (wordpress etc..)
Server Data Center (Liquid web, rackspace, linode, AWS etc.)
Analytics & Tracking codes, ID's (google etc..)
Linking out to similar domains
Whois
Nameservers
TLD's
SOA
Robots.txt
Front End Themes
Onsite Content Similarity
Made for PBN Look & Feel
No. of Pages similarities
Social Profiles for each site
Rich Media Similarities (file names of images, videos, EXIF info)
Traffic similarities (all traffic coming from similar ip's)
No Social Signals
No Legit Address for the site for contact
Using G products for your PBN :-D
ZERO Trust Badges for all sites


So add yours that are not covered above..

hmm, on the top of head..

No bots or spider crawlers from anywhere, blocked all (similar to above Robot.txt but more aggravating)
No linkwheel or interlocks
No blasting GSA etc. on Tier 1s

Thanks,
C.

In a nutshell:
1/ hosting similarity (host, registrar,name servers, whois, age, etc)
2/ look similarity (speak for itself)
3/ legit look (on a scale from 1 to 10, where 1 is crap PBN look, 10 is cnn)

If we're talking about potential footprints, I would also add:

- full articles on homepage
- using the same plugins/themes

Basically have a close look at anything you find yourself doing over and over. There's safety in numbers; so don't consistently do anything other sites aren't doing very often. Just vary things up and you'll be fine.

Pick domains with varying backlink types.

Thanks for the responses, but im looking way more specific. Im trying to build an algorithm that kicks out a quality scale for your PBN's
so if you have any specific foot print please share , it will improve my algorithm at a greater level.