My opinion-
[Devblog] Buy us coffee - Flat charge and worth paying for any user ✅
[Hashnode] Recruitment - Yes valid, and this can be done with share based model with organizations✅
[Hashnode] Marketplace - Two way process we need to do good amount of validation before we jump✅
[Devblog] Training and Courses - Worth making but Hashnode team has to makesure they have good content because if content comes to concern it directly impacts the platform not the individuals. This again involves validation ✅
[Devblog] Revenue Sharing via ethical ads-A big no for this, because I feel this idea will kill our current or upcoming user base. ❌
I have placed points in an order of acceptance by user.