I'd say number 4 "Keyword Value - a domain with a great keyword in it can be extremely beneficial for SEO purposes" is most important since people are probably

I'd say number 4 "Keyword Value - a domain with a great keyword in it can be extremely beneficial for SEO purposes" is most important since people are probably becoming more comfortable typing in a company name at google instead of their domain name. I no longer bother with the address bar.