The observed asset's access to attributes of the observer determines what can be done, as well as who is the owner of observed asset. Most of our members with some asset available cannot program, so any attributes of the observer must be easy to use and relevant to use for the asset owner.

Traditionally, we our members have valued privacy so high properties like observer.gender, observer.accessibility , observer.has.thing , observer.want.thing and so on are not available. Other attributes like observer.role , observer.technicallevel are hard to do and have not been a priority.

Some of these issues can be addressed by visiting an asset with different profiles or a profile where you decide which of your profile attributes have privacy issues for you individually (rather than assuming people are unaware of what they need or are unwilling to take risks).

Other observer attributes are really hard to do in a way interesting to non-admins or non-programmers. In the case of text or image as assets, as a former English teacher and student of Arabic, I can tell you I cannot do anything interesting I have not already done in a text for a given observer or group of observers without their gender, number, declension. English has the first, second and third person singular and plural, Arabic also has the dual-person, i.e. addressing "the two of you" - with correct gender.

Edit:
If I want to personalize an asset for an individual unknown observer, to give them a gift or present, I need to assume a lot of things to do it well, like an advanced horoscope. Who is P.D. James or J.K. Rowling or George? Boy or girl, woman or man? George is short for the girl Georgina who likes to dress like a boy, P.D. James was a female author who died in 2014, while J.K. Rowling is still very much alive and the female author of the books and plays about Harry Potter amongst other things. observer.age and observer.gender would help to personalize the asset, perhaps observer.fictional is in order to address Enid Mary Blyton's character George - really Georgina - from The Famous Five adventure series.

Creating assets, like jokes, adventure stories or images from still images of stinky cheese to porn with a personal twist quickly falls apart without more observer attributes. Personalized tours of a city you are in is out of the question. If you love Sherlock Holmes, you could have been given Baker Street in London straight away, or Cardiff in Wales if you love Doctor Who.

The one I would really like is observer.accessibility , which could be used to present a more accessible asset to those friends who really need it.