Is this the sort of thing you feel is worth someone else's time and effort, or do you think it's meaningful enough to consume some of your own? If the latter you can offer to do it, if the former you can pound sand.
The issue isn't effort here, but that each backported fix risks breaking something else. People who want all the latest fixes can choose the latest kernel, instead of relying on backports to stable kernels.
It should fix an actual problem, even if not found until now.