I think you have to have passion for poker to be ambassador. The short sets that i watched their stream (just to get pw) i didnt see that at all.
From DaVintsi you can see straight away that he loves the game and is willing to stream/talk/teach about it and so on and maybe get some new players.
So maybe it was strategic mistake from unibet which they corrected?
@Livertool agree. Like Espen said: People like watching MTT's runs. it is not a bad thing to let your ambassadors play during a stream games on other pokerooms, especially in MTTs. Instead of Djarii and similar i would like to see Maestro, Lee Lawrenson. But again : app and offer and little field increase. Give some tools for regs or recs with some aproach to game: download the hands from daily sessions in a format that can be used in popular software etc.
For me would be enough answer the business secret too, but it would be awesome having it and won't acting like the LC when they promise to mail you and somehow they forgot it. Btw it's very interesting to see how they turned the focus from online gamers to other groups.