well imagine scientists come and settle because they are researching unique animals or a prophet settles as he belives the site is holy. An artist settles as he wants o paint it. A engineer might be hired to build a statue in the city to comemorate it or maybe build a visitor centre. A merchant might be there to sell merchandise or profit from the wonder in some other way. Very believable
XML tag is easy, making it work is the hard bit. that would be voy's domain.
I thnk haver a 50% chance for happiness or random settled specialist. In python for the moment, it's easy, fast (you reeeealy won't tell the difference) and this has taken long enough, I can start work on friday and finish on friday as well.