It's kind of a weird balance with Ultra kaiju? On the one hand, there's this whole continuity and world-building established with recurring kaiju, chouju, and aliens that I like to see. On the other, the series can stagnate pretty hard if it only features things that came before.
I just recently rewatched/watched Tiga and Dyna (working on Gaia), and there's a lot of one-and-done kaiju in those series, and it really does work well to give it that feeling of newness even within established Ultraman patterns. Omega gives a similar vibe of freshness, and I really appreciate that. Ultraman Z is still my favorite modern series, but it is heavily referential to old material. So far, I think Omega may be a close second!