The tight end position is always one of the most frustrating ones to fill. There's a major gap between the top talent at the position and everyone else in a way that there isn't for running backs, wide receivers, and quarterbacks, so it can be tempting to grab someone in the Rob Gronkowski/ Travis Kelce/ Zach Ertz top tier. That's fine -- grabbing one of those players gives you an edge at the position over other fantasy owners -- but it can also make roster-building more difficult elsewhere. [...]