Old guard high-yield corporate bond ETFs have plenty of fans among advisors and fixed income investors. That's understandable because those funds, usually passively managed, provide broad exposure to junk- rated debt, often with favorable fees. Positive attributes to be sure, but that doesn't mean the junk bond ETF proposition can't be improved upon. Arguably, this is a corner of the bond ETF realm that could use some refreshing — an objective accomplished by the Neuberger Berman Flexible Credit Income ETF ...