Definitely, Steemit has room to improve a lot. I miss a knowledge base with useful posts as you suggest, but that´s not the only thing. Newbies feel absolutely lost during first weeks, and there´s no a comprehensive guide to reduce the time to see results. I wrote an article about it, maybe you could post your ideas in the comments section. https://steemit.com/steemit/@xuancar/steemit-weaknesses-and-threats