Don't care for the cast at all, although its not as bad as the horrendous audio cast (nothing can be as bad as fucking Darcy being the worst version of Death possible). I have no interest in a version of Sandman that doesn't look like Sandman, though (the Endless are iconic, and changing their looks is stupid) so this is a hard pass. It really sucks how no one is willing to put in the effort to look like characters anymore. If Guardians of the Galaxy had been made a few years later, people would have been complaining about Zoe Saldana being painted green

God forbid actors have to wear make up in genre films/shows to look like non-human characters. Unusual looking characters in a genre show? Fuck that, just stick actors in normal street clothes and call them by the character's name. It "worked" for Titans, so its good enough for Sandman, apparently.
Even if the show was actually trying to adapt the characters this cast would be unimpressive at best, but the fact that its going to the Titans school of adaptation just makes it worse. Sandman seems to be unadaptable, but purely because of terrible decisions made by the people in charge and not because of the source material.