Apparently you have not read this thread complety as there are many posts with pictures discussing the benefits of tumbling.because I haven't run across an article or heard anyone discuss the benefits using a tumbler in the reloading case preparation process.
The steps you describe such as reaming the primer pockets, cleaning witn a Q tip and polishing the brass with steel wool are all accomplished during the tumbling process (either liquid or dry - but I prefer liquid and wish I would have switched to it long before I did!)
Again however if you are comfortable with what you are doing by all means stick witn it but I sure like dumping those bright and shiny, new looking cases onto the towel to dry - and them being done!