Beginning with this Power Ranger series. It adapts the Super Sentai completely. Even though PR In Space did a good job of bringing in. After the first show you no longer see Bulk and Skull which has been the comic relief on PR for too long. It has also let go of past villains which got resolved in PR In Space. It also shows some real development with the characters both heroes and villains. It also delivers an overall storyline to the series just as PR In Space did. Even though the Japanese show Gingaman (which Lost Galaxy was based on) took place on Earth while LG took place on a Space Station that looked like a metropolis from inside it still showed that Power Rangers has finally grew up. Yes they are cheesy monsters but Sentai had those for years. But now Lost Galaxy shows that the characters do deal with trauma and personal struggles like the loss of a brother (one of the storylines that matched with Gingaman), and even the heroes don't quite make it. One example was Pink Galaxy Ranger Kendrix Morgan who gave her life to save Pink Space Ranger Cassie in the crossover episode. It also shows how some of villains can really be bad especially during Lost Galaxy's climax. You may say this does not belong in kiddy TV, but this was done in Japan for many years.
PR Lost Galaxy does give PR what it needs to run for many years, and give Super Sentai fans what they really want. A beginning, a middle, a great ending and great wrap-up, and then a new set of power rangers and villians to do it all over again.