To be honest, it's not a real threat to the highly placed positions, they have whale votes that cannot be easily displaced by the minnow votes. Before HIVE forked, there was a super whale (freedom aka pumpkin) with the #1 stake, he could swing the top 20 witnesses. He stopped voting after the STEEM debacle, so that leaves blocktrades with that ability, because he is now the #1 stakeholder. However, it's the thought that counts, every vote matters.