Adding tasks via email
 

A number of services provides dedicated email addresses that allow for todo items to be submitted via email, which is handy because you can turn whole emails into a task, and those email don't even have to be generated on the machine that you use for OmniFocus...
Examples are Toodledo, Evernote, RTM etc.
Any chance for this to appear in OF?

In preferences under "Mail" you'll find what you are looking for. OF will install a rule and you either use a formatted email address or a subject line to trigger the rule. The rule creates the action and puts it in the OF inbox awaiting your disposition.