Rough Estimation, if they keep throwing broken characters like chaze we'll soon reach the 100% power creep state where nothing matters anymore beside 10 powerhouse characters. Balance your game now...
The main accelerant of the power creep are the new characters. These rogue one characters are virtually all more powerful than everything you farmed for the past year. Count Dooku vs Shore trooper? The all powerful QGJ vs Baze? How about Poe vs. Chirrut?
New characters that wipe everyone out of their GW farms cause power creep because they widen the gap and prevent catch up.