Here's another paper "Subclinical Hypothyroidism Is Mild Thyroid Failure and Should be Treated", which could be of relevance to this thread. It is older than the article you linked to there, but it showed that about 1/3 of the time subclinical hypothyroidism progresses into hypothyroidism.
Now, I'm not saying this to be alarmist. But it would be good if these two papers (and the earlier one I linked to which showed the subclinical hypothyroidism in basically anyone taking significant amounts of Iodine) could be written up, maybe in a 'Potential side effects' section.
Along with the rash, which I understand is a side effect of bromine being flushed out. Yes?