I don't think you botch up the oline when you have multiple first rounders on it.
I think Collins and Cooper are finally starting to fit in after some struggles but they are still getting used to it.
I think the problem you have when you have so many high pick Olinemen on the team is your depth at the position.
You are Paying the oline (Collins, Smith and Beard) a decent price, you are going to pay Zack a decent price and who knows about cooper.
But your depth is what will hurt and even if you tend to get good depth (which we do not have right now) if it is good...they will wind up going off in FA as the team is not going to pay all of them top money.
So like with Leary....they knew they were going to pay Z big sooner or later so they late Leary go and decided to hope cooper or chaz can pan out.
Same would happen in a year or so if Chaz turned out to be a good LT (which we know now will probably not happen). But the point is if we draft another good LT but We keep playing Collins and Smith (if he gets over the back problems) but our back LT we drafted plays well when he gets the chance...chances are down the road another team is going to pay him more and he will leave via FA).
So if your depth is bad to start with...it is going to hurt you when you need them. But even if your depth is great...when FA comes around you have to make the decision to let a starter go or your depth go as you probably will not be able to afford both...and you are going to have to spend less in some areas on the line in order to keep the great ones.