Optional Goal/Scoring system for Bedrock

A separate system of optional goals/achievements isolated from the X-box Live system that would allow new forms of competitive games.
Inspired by the work that the Hermitcraft players are engaging in in their Hardcore Hermits games, add-ons could set up developer specified goals to be reached in solo or team play and score accordingly. This would be an marketplace based system for those looking for a different level of competition without requiring servers/realms.