There have been many raids added since the time of the creation of the leader board and was wondering if they will ever be added

While the idea seems great and all, It is very hard to control how many people join in a coop raid + it might be slower than most solos due to the fact you actually have to give the code to your buddies. It's only a good idea to have coop available for specifically hard content like Bluci and Bubs (both of which die in less than 5 minutes in a proper coop pup). And then there is akasha and GOHL (which it is nearly impossible to get the names of 17 other people in a pub)