And If Donaire wanted to win against Inoue, he'd rather develop his body weakness as this is the most possible target otherwise, he losses again.
He must find a hole for Inoue in order to take him down as he is firm and strong that he can really take a hard punch at their first meet. For this rematch, he must have to be more aggressive as this is the only way Inoue can make preparation for the next move.
They don't have a long age gap that is why I don't weigh this as a factor as experience is really an advantage when it comes to boxing sports.
Actually, there's no need to improve or point out his weaknesses because those are already there throughout the whole entire career of his boxing. He was able to stay in the world of boxing for almost over 2 decades and even got a chance to become a champion at 39 years old even with those weaknesses.
Might be too late now to change and shift gears by developing what are those weaknesses. Instead, the better thing to do is to improve on his expertise and his usual form. In that way, just a usual thing that even with those weaknesses, he can cover those by improving his strength.
I watched the replay of Naoya vs Donaire's first match, and the latter hit badly the monster in just the 2nd round of the fight. Naoya received an early fatal hit, a bloodied one, and struggle to bounce back until he successfully do it in the later round. If Donaire will able to repeat it, although Inoue won't surely allow it, he might have the advantage to control the match early and it's now up to his stamina where he will end up.