Have you looked into spray foam? R-25/R-30 is the best r value that you can get with the fiberglass rolls. Over time it settles, vinyl gets ripped and after years of getting wet from condensation, isn’t as efficient. As a MBS erector, I be seen the huge difference in heating and cooling costs...
Metal buildings are designed to move, to prevent drywall cracking, the wood frame is freestanding. If accessible, check all anchor bolts and main connections for “handsnug” tightness. If the building has formed ridge cap, inspect the bends, when they are manufactured, it compromises the finish...
Gutter downspouts insulation, to name a few…anchor bolts don’t come with MBS, but the layout will be in the first page of the details. Think about any future plans you have woth it and plan accordingly so u so t have to do the work twice. They are easy to add on to, but If that’s something...