I agree with OP.
And Minato is too overhyped. He's only known for his Space-Time jutsu. If you put him up against Nagato and use logic, you would know that Nagato would beat the shit out of him.
I don't usually disagree with your post but I would have to on this.
We have seen Minato only use S-T and Resengan, along with his intelligent but yet he was able to match both Raikage and Bee, won't say what really happen here as it wasn't explained clearly but as an assumption, we can say Raikage and Bee were outclassed or beaten. He even outsmarted Tobi (I do realize Tobi, was controlling the fox and all) but with one attack, he marked, wounded and took the fox out of Tobi's control which is quiet impressive.
Itachi just with regular Sharingan is able to take the likes of Oro and Deidara out within seconds.
As a little joke I read somewhere, which is also somewhat true
3rd Hoakge took 3-4 episode to beat Oro
Sasuke took 2-3 to beat Oro
Itachi took 30 seconds
Itachi with just his genjutsu was deadly alone (He could beat many shinobi's just with a regular genjutsu and even experienced ones), as Minato was with his S-T (He could S-T and stab people with Kunai's and end battles), it was said that elders from other villages told there shinobi to run when you see the Yellow Flash of Konoho and this was before he was Hokage.
The truth is Minato, Itachi and Nagato are three of the most popular character and most over hyped/under hyped at times.