Well most steemians love to talk about steem and only steem related things and in my own opinion that will not improve the quality of people and contents we see on the steem blockchain.
If you're going to do anything that is going impact the platform positively you will have to look outside the box and think of ways to push traffic to your vlog. One way you can do so is by talking about trending issues on social media or your country. Something people are willing to listen to. It might not have a direct impact on your steem earnings as most of your views will be coming from outside the steem ecosystem but in the long run you can build a brand for yourself.
Sadly, there isn't much people outside the steem ecosystem would want to see here and I hope in the going years steemians will have a boarder look and approach in terms of creating content. There are over 3billions internet users. We only have less than 2milluons users of the steem blockchain. In other words the world is bigger than the steem ecosystem and opportunities await those who will actively seek it.
SEX is definitely the catchiest theme of all time.