taijutsu wouldn't really be trouble for madara.
1-sharingan allows him to predict and learn his opponents movements, and he has the body to react with it.
2-naruto stated that taijutsu doesn't work on pain due to his shinra tensie repelling any attack. this shouldn't be a problem for madara at all.
i dont think taijutsu works on him.
I know, but i ONLY mentioned maybe, however as i said, every jutsu has a weakness.
The fact that he was able to clash with Hashirama Senju, who was recognised as the strongest shinobi in the world in his time, also indicates that Madara was also one of the strongest ninja of his time. Overall, Madara's power, influence, fame and status were so great that his name alone was enough to incite terror, and Tobi was able to use that to his advantage to instigate a world war....etc.
Madara was a skilled taijutsu fighter since childhood, possessing notable physical strength, great speed, and great reflexes as well.
Madara is a sensor type too, so yeah Taijutsu won't work. But i think his weakness is a bit " speed "..... Lee and Ay managed to hit him, Minato's speed and great reflexes can hit him with taijutsu.
As my opinion, Madara has no weakness BUT i think speed can handle him.