As an opportunity - yes, it's good. But only in theory. Not in practice. Minnow will spend the last penny to promote - but it does not work. Redistribution of coins will not be. And Steemit system will not stronger. 100 people have hold 90% of the entire power system.
https://steemit.com/steemstats/@furion/steem-analysis-ownership-distribution-and-the-whale-selling-pressure.
And only they can change something. And no promotion without result.
Who have read your post with the promotion? This same users as without promotion. The number of readings has not increased.