Look no further than Mike Pouncey who was a center drafted in Round 1.
Center is generally the leader of the Oline (or should be). They make all the calls and get the protection setup. They also work very closely with QBs and that dynamic is a big one. A great center can make a world of diffrence for a O Line. Again, I am not saying its the most important position to take, but an Elite center would be worth a first round pick, if the other positions I listed are not available.
I would basically make my draft board for round 1 based on that positional ranking I have.
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