Honestly I really hope the human boy isn't Tobio... I have nothing against him, but his death is such an integral part of Astro's backstory. A big "whoops no Tobio's still alive!" cheapens the emotional punch at the beginning of the story and changes too much about Tenma's character arc. It's great as fanfic material but doesn't work well for a big-budget retelling, I think. I
do have some issues with the character designs here, and Astro does look pretty odd that green shirt (that's part of his skin I guess??), but honestly it's not enough to keep me from being excited about new content. Even if it's mediocre, it'll be something to talk about and result in more people watching the old series.
Also yall were talking about the polygonal shapes in the sky from
this poster and hypothesizing the world they live in is a simulation. My first thought was that it's a protective dome! It would be fun if the city was actually part of a massive space station, or maybe located on the moon or an exoplanet. It would certainly fit the tone better than a matrix scenario. ...It could also be like the situation from the Lorax movie, where the earth is ruined and they live in a bubble of good air quality, but i hope not.....
One last, small gripe: man, do I wish they had given Astro brown eyes. If they're gonna be so hamfisted as to call the town Divercity they could have at least kept that, it's a visual signifier of his Japanese heritage.