It has promise, but a much steeper learning curve. You need to know a fair bit of HTML/CSS & JS
This has stopped me for even trying Oxygen because 1( I am very familiar with Elementor and, 2) My knowledge on HTML, CSS, and JS is veery limited. Although, I am watching a few beginner's courses of those to learn the basics.
But, damn, after watching a few tutorials on YouTube about Oxygen 3.0 I am starting to feel motivated to try it. Especially, since it states it doesn´t bloat up the code like Elementor.
I actually don´t mind the learning curve to be steeped. More than happy to devote time to get familiar with it if, in the end, it will bring more value and benefit both for me and my SEO clients in the future.
One thing that worries me is the pricing system that the people at Oxygen have set up.
More often than not, programs and applications that have chosen to offer a one-time fee for the use of their product, over time, it ceases to be profitable for them and is where updates problems start to kick in.