Starting with the low budget (don't tell me it was high because otherwise they are unjustifiable), they were unable to transpose many scenes into animation. There is an episode of the first season in which Usagi suddenly faints and is supported by Mamoru/Tuxedo Kamen. In the manga Usagi has been brainwashed by the enemy and is looking for the Ginzuishou, in a state of semi-consciousness she faints under the weight of the thoughts and the evil power of the enemy.
In Crystal, a moment before, the senshi have blocked the enemy attack on the city, so why does Usagi faints afterwards???
Character designs that are not spot on, animations that are often slow and wooden, characters that most of the time do not exude emotions...
Comparing the scenes already seen in the 90's anime to those of Crystal/eternal/cosmos we can see the downgrade and the little care put into this remake.
Even crystal season III, which is the best season of the entire remake, is far from perfect.
Disproportionate bodies that seem to be made of rubber, the senshi's faces seem to be a carbon copy of each other, scenes that are sometimes too fast, with some freedom of expression by the animators (present in the entire remake) with questionable choices (they could have worked on the real appearance of Mistress 9 a little more, come on...).
Throughout the remake, the senshi's powers are downgraded compared to the manga, the bloody or grotesque scenes are all censored (I still wonder why, given that the target is an adult audience...)
A bland and often insipid remake, which takes away a lot from the original work that, if transposed with care, can make a good impression.