Senki Zesshou Symphogear AXZ

Overall Rating 5.7 out of 10 - Sequel that combines worst qualities of its predecessors.

Somewhat watchable.

Unfortunately, in 4th season Symphogear combined things I did not like in 2nd season with things I did not like in 3rd one. From 2nd it took dubious plot and from 3rd unlikable characters. 

We again have three girls as antagonists. Saint Germain is stern, hard and dislikable Maria 2.0. She is paired with voluptuous in a bad way Caliostro and more creepy than cute Prelati. Alas no one as cute as Shirabe and Kirika from 2nd season. Female design as weird as in 3rd season.

Story is again a confused trio doing bidding of the real bad guy. It leads to predictable plot twists where the three girls' defect to SONG. Alas nothing as interesting as Carol's plan from 3rd season.

Overall quality also falls. Animators fail to draw their heroines sexy with proper curves and body shape. In early seasons they used to be better, as far as I remember. Alas Gode Geass level perfect bodies are further and further away.

Real main antagonist Adam and his Autoscorer fangirl, Tiki, somewhat redeem this season but not too much. Final battle of couple of last episodes (11 and 12 mostly) is also surprisingly interesting here.

Overall, this is a poor season with only few redeeming qualities. The only reason to watch it is to keep up with the overall story.