One aspect of this ST that I think fits very well is that anyone can use the force. That is to say, few have the ability, but those few can come from anywhere. This returns us to the world we entered in TPM. The Jedi travel around the galaxy, keeping peace and justice and finding new talent. They take that talent to the Jedi Temple for training where, if the young person succeeds, they become basically a monk. The eschew attachment. The Jedi we met in the PT are really kind of twisted. The order is ancient and it seems that rather than deal with the dangers of the Dark Side, they just avoid anything that can lead to that danger. Sex leads to love which leads to jealousy etc. So these great and powerful Jedi have no line. No offspring. The potential dies. As we saw in the OT. The force can run strong in a family. But when there is no family there can be no line. This is where the ST gets the idea that anyone can use the force because this was the setup in TPM.
I see the PT Jedi as flawed (and Lucas seems to have as well with several references in the PT to issues and the total failure of the Jedi to detect Palatine or see that they were pushing Anakin down the dark path). The PT Jedi need to not return. The message of balance in the ST is important. The only hints at what the Jedi should look like lie in the old EU (the only place we see a different type of Jedi in the New Republic era and the Knights of the Old Republic era). Jedi can marry, have children, etc. The relationships are more organic and the Dark Side is less feared (just as dangerous, but with training avoidable). We are treated to a violation of Yoda’s teachings in ROTJ when Luke faces Vader. Vader makes Luke angry. Does it lead him to the Dark Side? Almost, but not quite. Luke rejects the dark side.
Rey comes from nobody just as all the PT Jedi did. There were no great lines of Jedi because the Jedi didn’t have children to make lines. The PT Jedi were all one off. So this idea that anyone can be a Jedi comes from Lucas. That is the setup for the Old Republic. This idea that Rey must belong to a family is in direct contradiction to the world as Lucas created it.