Even if you add it in a random place I don't think adding a single line in a section of ~10 lines (in most cases) makes merging difficult. You might end up with a duplicate if two coders add the same module in two different places. But since auto-merging can lead to other issues*, the proper thing to do is to review the merged code anyway.
*Possible problems with auto-merging a list of modules include:
- Two modules that export two functions with the same name
- The same module included but two coders, but one of them then changing one its options
- Two different modules included, where one is just a wrapper for the second
I'm not saying that choosing an order for the use statements is a bad idea, though I mostly think it's a question of taste of prettiness of the code (which are important). I'm saying that if your stated reason is to make the list of includes more manageable, either there's something very wrong with your includes, or you have failed to consider solutions that solve more problems.