This ideas you summarised are some of the things am planning on doing in Uganda.
I recently wrote a post,guess yesterday on ideas I have for promoting Steemit to universities here in Uganda like using music,fifa competition,chess etc.
On the idea of on-boarding,a series of blogs is a great idea.
I have realized for the 5 months I have promoted Steemit,what retains the people I bring is the small 1$ upvotes they get on their posts especially intro post..!!
I have a group of guys who joined around 3 weeks ago and they r making money and are excited coz they made money straight away and they are now helping me out in promoting.
Thanks for the work you are doing on the promo-steem website and the steem ambassador account.
Keep up the great work legend.
awesome ideas and energy from you @jaraumoses! keep it up! ill be following your progress!