I usually work with large assemblies in Simulate, sometimes with more than a hundred assembled parts. I am not able to mesh the entire assembly, if I don't change the accuracy from relative to absolute, and try to use approximately the same values for the parts. I have to open up every part separately and make this change, which is extremely time consuming.
In Simulate, there is a Tolerance Report button in the Tools group. You can click the links of the part names and highlight them in the 3D-window. It would be extremely helpful, if you were able to click on the tolerance values in this list, and be directly routed to the Prepare -->Change accuracy window for that part. This would save so much time! Another alternative would be to being able to just click a button and change the accuracy for all the parts in the assembly in one click.