@surpassinggoogle, In my opinion this Sub-Tag will going to filled with the Travel and Foodie experiences and that is needed because when we see the Sub-Tags of fellow Steemians then the content will be inspired by them sometimes. But for sure these Sub-Tags are like the Chain Of Collaboration and for sure it will going to boost the Steem Economy and that is because of increase in the Engagement Levels.
Wishing you an great day and stay blessed. 🙂