Fair points, and again I'm not saying we have to add starter level players via FA, but we can't count on talking an OG in the 6th rd and developing him into a high level starter.
There are always exceptions (Owenu), but there is years of empirical data that proves acquiring starters, especially good ones, diminishes greatly as the rds of the draft progress.
Based on where we should be picking, that's right around the spot the top IOL should start coming off the board. Unless there's a DLine player or LB that slips and the value is too great, IOL will definitely be in play with our 1st. WR and TE could be wildcards too. That's why I hope we do what we did last year and try to improve our weaknesses as much as possible via FA, so we can be truly open to any position (outside of QB) if the value is there.
Philly did a great job of that over the past few years, just let the board come to them, and take the best player available even if isn't the biggest need. That's how you build a deep talented roster.