5 starts are not the Norm yet.
i don't know why people keep saying this. They're adding new 5* but didn't add more ways to get them. an average endgame-ish gets a 5* every month. until you can get them every week, which i don't see happening anytime soon.
A 5/50 4 stars can still clear most of the game content. Only Labyrinth requires 5 stars, and you can still do the initial clear with 4 stars ! until they add a new difficulty for the event quests and add more real end game content that makes 4 stars like 3 stars, and add more ways to get them i'd wait on pushing up 5 stars. This is just my 2 cents and initial thoughts. i'm interested to hear yours