Is it possible to set a default value on a user profile property? Eg a term?
I guess one has to hook up with a user profile creation event, but I can't find this one. 

A workaround could be to add another property, hidden, and run a periodic timerjob to set a value and set the 'default' value to the first property. When running the timerjob the next time, check if the hidden property contains a value set by the timerjob before, which means the 'default' property has already been set, skip this one and proceed with the next one to check if the user profile is created in the time interval between running the timerjobs. 
I don't this is performance wise a good idea (with a lot of users). 

What do you think? Do you have a solution?