If he gest to know about Im he will keep doing his job, if Oda is a dork and wants to hype Im at the expenses of Akainu he could even make him bend the knee or something like that in front of this supreme ruler. If Oda wanted Akainu to stage a coup he would have delivered hints but instead he now is pumping up In and the gorosei as strong fighters (be it hax or physical abilities) so I don't see Oda taking this route.