Sharingan
Seeing chakra is very handy in some circumstances. He can only copy what's in his ability to do. The "prediction" is a one-time only ability that has been forgotten about, it does however enhance perception so that movements seem slower. Fast opponents are still hard to deal with.
Koto Amatsukami
He couldn't use it since it was still recharging while he had it, and when it was finished he no longer had it. It's technically Naruto's ability.
Even if he could use it, he couldn't just whip it out. He'd need to summon his crow and rewrite the eye first.
Amaterasu
If it were as hot as the sun then Itachi would die too and the Earth's atmosphere would likely be ignited. Still a decent summary though, it's a fireball that can be directed by the user and can't be extinguished by normal means. Dangerous, but beatable.
First though he has to charge it which gives off a warning, and it also uses a large chunk of his chakra and damages his eye.
Tsukiyomi
Potentially one-shot, if they make eye contact, and it's also possible to resist or break it using a strong mental fortitude. Kakashi resisted it and Sasuke broke it with a high mental fortitude, Itachi also said that a Sharingan cannot stop it.
Also uses a large chunk of chakra and damages his eye.
Susanoo
A fair summary. A large, strong, durable... also slows him down, takes time to form, doesn't protect from underneath, and using it damages his body and drains his life-force.
Yata
Blocks and negate all attacks... from a specific direction, and can't stop everything.
Totsuka
Being hit with a giant sword is a one-hit gg anyway, it's sealing ability is highly overrated.
Magatama
Yup, Itachi's most powerful attack which is basically just giant shurikens.
Izanami
This technique isn't designed for battle and is almost impossible to pull off without help and great luck, at least against the level of opponent he'd need it against. This also makes him go instantly blind in one eye which robs him of two of his MS jutsus; Susanoo and one other.
Itachi's powerful, but his position in the manga is stated to be below Tobi and around Jiraiya. If he were any more powerful than that, he could had stopped Akatsuki himself.