Try the pleasure of unloading the film from the spool, making sure you expose the right side and only that for the exact amount of light without bending, scratching or dropping the film, and then put back the wet film on the spool. In total darkness!

I did it (on a jobo, too) - it's fun (and I hope to have the time to try out PE's latest suggestions, results were so-so). But it just can't work in a commercial environment, which needs repeatable and exact results (I remember people complaining that K14 quality at
Dwayne's not as good as in the Lausanne lab). I was thinking of making a 3d printed re-exposure machine. Even if Kodak brought back the film and made the chemicals available, how many people would actually do this at home?