ETF Trends’ Lara Crigger highlights concerns over Finra’s “complex” product proposal and offers her take on an SEC probe into ETF revenue-sharing practices.  BNY Mellon’s Ben Slavin covers a range of topics including the Finra proposal, Vanguard’s share class patent, mutual fund to ETF conversions, and crypto ETFs.  Leverage Shares’ Oktay Kavrak discusses their unique lineup of leveraged and inverse ETPs.