madara biggest goal was to awaken hagoromos chakra and in turn the rinnegan to complete the eye of the moon plan, the final battle was staged.
keep in mind kishi didn't show madara MS abilities and yet everyone who awakened MS have their abilities but madara hasn't.
so tell me why he didn't give them, is it because hashirama would be weaker if he did because if hashirama was stronger there would be no need for kishi to not show them, but if he gave them he would be stronger.
funny thing is madara only used susanoo and every time he did, the susanoo looked smaller compared to when he used against the 5 kage.