The biggest problem this show has is its pointlessness. It's just a prequel of an unfinished story, and a bad prequel at that.

George RR Martin is a fantastic world builder but writing books/shows is a bit more than just building its wolds and characters. This show feels and ultimately is just a history lesson on Targaryens. And that wouldn't be a bad thing if we had an actual ending to the original books. But on its own, the show is really lacking of anything interesting.

The characters are king, woman, woman, black guy, fat guy etc. And if you don't see a problem with Velaryons being black, when Aegon(I) mother was lady Valaena of that same house Velaryon, then you don't see a problem with inconsistent writing. If you don't have a problem with inconsistent writing, then anything can be a good show to you, which is debatable to put it mildly. And if a character's color isn't "that important", then why change it in the first place? Other then shoving wokeism down our throats?

If you really want to get to know houses and the world more just go read The World of Ice & Fire. It's far more coherent and, even tho it's just a history compendium, far more interesting than this show.