It's a nice name, and Raffaele is common-ish in Italy without being overused. I don't particularly think it needs a nickname (nor that any name does for what it's worth, but maybe it's a cultural thing?)
While I don't think what other people have to say/think should be completely disregarded, I don't find the objections you're receiving particularly valid, especially if it's going to be a middle name.
"We have met the enemy and he is us" Walt Kelly
This message was edited 9/23/2019, 1:19 AM