For the vast majority of circumstances, a 2i is a 2i, and a further breakdown of the result would not be required - this would be for things like grad schemes and other employment. For those places who were interested in the breakdown, such as if you were applying for further study, maybe law etc, the recruiter could ask to see the transcript, whereupon he or she would see your mark was as close to a I as it is possible to get.
Would I risk appealing, having the appeal accepted (after an inevitably lengthy process), resitting, remarking and waiting...? No. What practically will you gain from this? You know your result is practically a I class result; the transcript evidence this. That would be enough for me.