Sometimes I agree with Broaddus, but I find myself disagreeing more than agreeing. I do agree with him on a couple of points here. Absolutely they need to know what they have in Trey Lance this offseason. They cannot go through this season not giving him any playing time. If he shows up as something with potential, they can trade him, or have him as Dak's eventual replacement.
As for the offensive line, I am kind of split on this one. I get the idea of developing players now for the future, but it depends on your goals for this season. If the Cowboys really want to win this year, and I am not sure that is truly their goal, then they have to play the best 5 guys on the OL. If it turns out that Guyton and Beebe are not as good as Egoda and Hoffman, then so be it. The rookies need to earn their spots on the starting roster. If, on the other hand, they see this year as a throw away season, then sure, plug in Guyton and Beebe and let them play to develop them. Honestly, if Guyton cannot beat out Edoga for the starting LT spot, that would be an issue for me.