Although we all love the idea of decentralisation, there can be advantages to having some things centralised. Like a notice board for example. Perhaps you want to make sure everyone hears about something, a scammer or other valuable information that all should know about. Or perhaps you have arranged a live gig etc. Also there are a lot of valuable services on Steemit that are hard for the beginner to find out. The Steemshop, The Art Gallery, the bookshop for example. These took me ages to find out about. If I knew of a central place to go when I signed up, this would have been enormously helpful. A central noticeboard type place for such things I feel would do well. But it has to be visual. People love simplicity.
I know we have the "promoted" category but from what people tell me it is not really working as well as it used to before the last hardfork. (when it was 24 hrs to upvote rather than 7 days). It seems that folk view the "promoted" section as a kind of cheat to get their posts seen in order to make money and so they are ignoring it. I dont know how true this is but this is the feedback I am getting.
However, all understand the concept of a "notice board" perfectly well.
We have such a notice board in my village. I see people looking at it everyday when they go to the post office. I saw two new posters on there this morning "Apartment to rent" and "Brass Concert this Sunday"
Imagine a page where you see lots of little icon type pictures that tell what it is like a click-bait header with a small image) and you can click on it and see further details if you wish. The notice board could have a limited time of 3 days for example and after that it is automatically deleted. If anyone abuses the system with scamming or advertising then they could be banned thus eliminating such selfish behaviour. Just a thought.