To me the IMC rating never made any sense as a useful rating it was more a rating to get yourself in to trouble with.
I can only assume that your training was somewhat lacking....
For my purposes when I was an ATPL holding UK/FE(PPL), the IMCR was precisely what I needed. I neither wanted nor needed to fly down to 200ft a.a.l. in a spamcan, but the ability to fly in cloudbases of 600 ft was ideal. Finish a training exercise above 8/8, then a quick cloudbreak to visual was perfect. Playing airliners in a light aeroplane was emphatically for others - they were welcome to it! It was boring enough in my 'day job'.
Re. the EIR, I don't think it will be 'useless' if accepted. But I do think that it will probably have little appeal / practicality.....