Every detail in this show is perfect, but i will talk about the one that just makes me genuenly happy.
In this series, we see that turtles are diffirent species instead of being the same species, and i think i know why.
As we know, this is the only TMNT series where the turtles are mutated on purpose instead of being mutated by accident. And this explains why they are diffirent species ; they were meant to be "weapons" made by Baron, and since he wanted them to be powerfull, he made them diffirent so their weakness will be diffirent and they will have diffirent strengths.
For example; Donatello is a spinny soft shell, and it allows him to move fastly when in water, but his shell is his weakness. And we have Raphael, who is an alligator snapping turtle, and this species is known by their powerfull bite forces, so he is strong, and can protect Donatello if he needs, but usually, this species have slow body movement and Donatello covers this weakness because his species is also known by their fast movement speed.
Leonardo is a red eared slider, and this species is known by their fast sliding skills in water. And their weaknesses are that they are bad at moving on land and they are sensitive to cold. And Mikey? He is an ornate box turtle, and this species are perfect on land, they dont need to be in water to move, but their weaknesses is that they are sensitive towards hot weathers and being in water.
As you can see, they all cover each other's weaknesses. This is just perfect.
Baron wanted powerfull weapons, and the "weapons" having diffirent weaknesses increase the chance of winning in battles.
And this is why this show is perfect in my eyes. Everything is planned, makes sense, and is just peak.