I believe that the jojos bizarre adventure series dose not have enough characters in jump force. With the upcoming addition of Giorno Giovanna into the game I think the game should add someone with hamon (or ripple) abilities so our avatar characters can some JoJo abilities as of with our other characters in the game like jotaro summon stands to fight so we can't have there abilities. So who is the best candidate to add, Joseph Jostar of course. A) he is a Jostar and the protagonist of part 2 B)A reason I don't think this should be Jonathan ether is because to put it simply he is boring with his attacks, he has nothing too special with his fighting style plus he is not as iconic as Joseph because he is in multiple parts. he has  unique abilities like clacker volleys and he could even pull out his iconic Tommy gun attack as well as just having a hamon overdrive too. His awaking could add Caesars headband as he yells "SHIZAAAAAAA" and his ultimate could be called "Nigerundayo" where he runs away, grabs a plane and crashes on the enemy. Other abilities could be called "your next line is" or something (credit to u/Scipo835  for the ideas).