I summarize here the thoughts i left in other topics expanding that.
Crystal s1/2 pros:
I like the idea of voluminous and flowing hair for Usagi and all the girls' lips like they had a light lipstick, they could have been developed and styled better though (i like the ones made for ore monogatari).
I like the finer details in drawing and coloring used in some episodes such as that of Pluto's death.
The fact that the characters have a mature look is an interesting element, I would have saved that for the dream / stars arcs.
The clothes are designed with details and care.
The animation of the attacks in real time of the inner senshi is graphically well done, even the enemies of the s2 had attacks with an interesting animation and up to the occasion, i like that.
The transformations of the inner senshi (moon aside) are animated, designed and studied well, I would have preferred them in 2d but even so graphically speaking they are beautiful.
Crystal s 3 pros:
The characters have acquired more expressiveness compared to the first 2 seasons.
The coloring of some episodes is good.
some episodes have good graphics quality.
I love the rainbow double moon heartache.
Saturn's awakening and her role, while brief, was well characterized.
I loved the scene where Hotaru saves Chibiusa by giving her back her soul and the silver moon crystal.
Mars' pose during the transformation is truly a gem!
I really liked the chase scene of Usagi trying to catch up to Haruka and Michiru. Then the sad expression she has sitting on the bench exudes her entire state of mind.
Eternal pros:
The gradient coloring of the eyes is well done.
The design is defined and clean, constantly uniform in detail and quality.
The spectacular graphics of the attacks of Uranus and Pluto and the transformation of Mercury, a real gem.
Some textures used for clothes, like Usagi's skirt when she goes to visit Mamoru and those for Xenotime and zeolite are well integrated into the animation.
Mamoru is represented in its best form graphically speaking, it is the best Mamoru they have baked.
Cosmos pros:
the colors and backgrounds are beautiful.
the senshi seem older in age than in Eternal and this pleases me.
I appreciated the small cameo that reveals Galaxia's past before she acquired her powers (even though I would have handled it differently) and the glimpse of Sailor Cosmos' future.
A special mention goes to the songs and the OSTs, many are truly beautiful!