I share that concern as well. I think we would need more blogs showcasing other worthy authors through similar initiatives. Witnesses and whales are frequently busy and rarely share their SP. (The only ones i see frequently spreading their voting power among the minnows is @pharesim, @kevingwong, @pfunk, @vortac ofc, and a few others)
I cant offer their level of upvote, but bots and upvote services allow me to lift this post to the trending page to create exposure for others at least once a week, and reward a steemian with a nice upvote that creates good content and wants to help create exposure for his fellow steemians by resteeming this post.