Hey, the old adage "If it ain't broke, don't fix it!" comes to mind. If the rig is doing what you want then that's great. If something is missing or not working properly, then that IS a problem.
If everything is fine in Device manager, it is fairly safe to assume that your PC is working as it should and that the software environment is OK. And no, you shouldn't be missing out on any of the advanced features as most of these are hardware based rather than software.