> Exact match keywords are an absolute killer when it comes to ranking
Where are these keywords supposed to be? I'm guessing exact-match domains. I don't think they matter much but that's up for debate.
> For the same reason, have no follow backlinks as well.
I think that's supposed to be "no nofollow". I dislike nofollow a lot. Some of your links are bound to end up in places that use nofollow, no need to worry about it.
> Backlinks from .edu/.gov sites
Spammers have been after those since at least 2005. I'm sure Google knows better than to place a lot of weight on those.
> Metatags are still important, even if Google doesn't care about them.
Meta keywords are dead for sure. Meta descriptions are the oldest standard way to provide a summary of your page, so you should use it. There are also many non-standard meta tags that can prove bad for your site (nocache,noindex,etc).
> PubSubHubbub is excellent to get your site noticed/indexed by Google
Dunno about that, is it any better than a regular RSS feed (and maybe a good old blog ping)?
> The number of indexed pages on your site
If you have enough "positive factors" you will have more pages indexed. How can that be a signal in itself?
> Make your content unique.
How do you measure the uniqueness of your content? Besides that, there's many types of content where uniqueness does not matter and is not expected, for example: lyrics, recipes, press releases, syndicated news and more.
(Duplicate) Content can be aggregated, filtered, commented on, mirrored, reorganised, reformatted and so on.
> A public whois record
Why does that matter? Whois obfuscation is offered by most mainstream registrars, lots of people use it. It's an effective tactic against all the unscrupulous people that mine whois records. Also plenty of ccTLDs do not expose anywhere near as much information as .com and the likes.
> A domain registered for more than one year > An aged domain name
That would be a great way to provide stale content to a lot of search queries. The rate of website creation is surely rising, why do we have to trust their content less? And with many people buying old websites in order to exploit this presumed signal, the noise has certainly gone up.