Maybe each developer / creator / maker needs someone around them to "sell" them (and their creations). To push it on the vine/rumour/vibe. Yes, an advertiser/ salesperson - herald - on a fractional basis :) , one per village.
To create and to sell are very different skills and things , even somewhat contradictory - and they rarely appear in same person.
The Organisational patterns book [0] have a role of Matron - a person who knows everyone and what they're up to (without need of deep understanding) - but that's not the same, and it's organisational.
i think that such people are needed in everyday, personally, too. To knit and entangle the threads of society.
[0] http://www.amazon.com/exec/obidos/tg/detail/-/0131467409/
[1] https://www.svilendobrev.com/rabota/orgpat/OrgPatterns-patle...