There are some fans that seem to be going into it intending to tear it apart if it's not perfect but there's a lot of overreaction and such.

One example is in the most recent episode Oberstein, a person with artificial eyes due to a birth defect, mentions that he probably wouldn't have been allowed to live under a past dictator, Goldenbaum's, regime due to a eugenics program. That was the only mention of Goldenbaum's atrocities mentioned in that episode and people were lambasting the episode glossing over them.

But the problem is that those other atrocities were not mentioned in the original series until like episode 40 in a documentary that a character watches during a long space flight.

Aditionally, Oberstein's characterization in the new adaptation is a little more sociable, but I still think they really nailed him, just with a different interpretation than the original anime did. But some people really really seem to hate it? Also he's only had a few minutes of screen time so far so whatever lol.

For me, the only thing the new series has left to prove is how they portray the democracy that's constantly at the risk of turning into fascism (the Free Planets Alliance) and the slimeballs responsible for making it the garbage pile that it is. So far though I've thought it really good and let me tell you I'm a huge fan of the original series and am currently reading through the original novels, which are finally getting professional translation.