Now we know than the new Sanji power ups and the future will be upgrades (raid suit and upgrades from ussop and franky). That is done than he never will have coc, due Cyborks doesn't have coc and good haki. Sanji cyborg, the same than Queen, don't need to improve their haki due well they are cybork (logic). So Yamato-san will be new third star with zoro and luffy (coc monster) while Sanji will be new mugi cybork (can due monster cybork with franky)
Duo cybork
Duo cybork with their suits
Duo cybork
Duo cybork with their suits