I saw this report elsewhere on the net this morning. I'll check your link, but where I read it never really gave advice on which spices or herbs. One thing I'm not good at, unless the recipe is specific, is knowing what is supposed to go with what and why.
The bit I read though didn't say whether, once off the trial, those who were adding spice gradually went back to adding salt instead. It's expected that there may be a salt reduction when you are enjoying yourself experimenting with adding other stuff, but did the affect persist once that fun part was over and it was back to day-to-day meal preparation ?
Meanwhile the scales were not so kind to me today :-(