Wow, you mean gamification actually works and that people get motivated by 'Unlocking stages ' as they go along,
I would love to see it Gamified, but that may be a community activity such as Here is lesson 1, follow this and reach this goal and you will then get access to lesson 2 with a constant reminder to not get ahead of oneself and confuse the matter.
I am sure I have seen that model before ???
LOL Never heard of it ever before ;)