Point noted : Don't be a stranger!
From my few months on steemit i have to say and agree on whatever you mentioned above. Keeping consistent posts and interaction does improve the profile. Although whenever i tried to post un orginal (derivative) posts. It dint helped me much but posting my thoughts or making an original helped me gain to connect with like minded and more friends.
It's not easy for sure, but in the long run, its worth time investing in it. By blogging you learn yourself too as a bonus you make new friends and earn too.