admiralarjun for ctfs, you can add tryhackme, vulnhub these are the most used ones along with hackthebox.
You can add an updates forum for news updates. Smaller content with link to actual news. News like, new ctfs, competition, bounties, cves etc.
Add development-> python, ruby, c/c++, Java etc
Add Carrera opportunities.
These are just suggestions and they all are subject to change. You consider what's best.