I'm an avid reader of the Iodine forum and have been taking high doses of Iodine for a while. I'm currently taking 6.5mgs a day. I agree Iodine is often a missing link for a wide variety of conditions and certainly urge everyone to increase daily intake way above RDA values.
A more direct route to treat hypochlorhydria however may be via intake of niacin or betaine HCl. Long term stomach acid deficiency will result in numerous nutritional deficiencies and toxin accumulation that will invite pathogens into the digestive track.
I'm doing great with niacin so far and think it's an alternative method to consider.