You are exactly right with the following two lines:
"The problem is allergies are problems with the fine-tuning of the immune system."
"Otherwise this is a bit of highly important research, but it won't lead directly to anything usefully applicable"
As a better understanding of our immune system, and how we can help fine tune it, will have tremendous impact on disease research and finding treatment procedures.
Allergy issues are increasing and so is the complexity of cancer, and they would both benefit from of an improved immune system, wrt. receptors.
So, this research is hugely important and I hope more institutions are following up on it.