It is important for people to feel recognized, and the topic of the courses is very important as it reflects a person's identity. If you truly want to attract and engage your audience, give them the opportunity to express themselves! The platform should have a "About Me" section where, if desired, users can provide information about themselves and the courses they have completed in the form of certificates or badges verified by the course creator, with a note of verification or automatic addition after completion (there should be an option to issue certificates and place them in the described section on the page of the person who completed the course). Additionally, there should be a step-by-step evaluation system so that a person can progress through the course in stages, and this should be shown in percentages or a scale indicating how much of the course has been completed and to what extent (to ensure authenticity, the certificate should be verified if the course is online without the support of curators, just in a recorded format). If support is available, then the course organizers should decide on the grade to give the person, as their reputation depends on it. If a person completes the course and knows nothing but has good grades, then a review can be left regarding the person's competence and skills! This scale will be calculated for course creators, and the more people who receive a good grade, the greener the circle or trust percentage becomes on the course creator's page (increases trust); this can be implemented in various ways! If people who have taken the course have poor understanding, the circle becomes redder depending on the percentage of positive or negative feedback about the students. !!!!!!!!!!!!! This is an example that will make the platform very popular and truly authoritative. I have slightly different goals, but you can take something from this for yourself! I understand that it may be difficult to implement, but over time it will be worth the effort! I wish you success. Eventually all your platforms will merge into one.
