I have been playing around with the ATS system 4.01 and watched most of their videos on YouTube.
https://www.youtube.com/@tradeats/videos

At the end of the day I still like my own system (it's what I am used to), in fact I cannibalised XU-v39 and simplified the whole process as part of my Complexity Reduction Act of 2023. It is so easy to see the master pattern as described by ATS and directional trading is clear too. This way, I can keep things simple without cluttering up the 15min chart.
Xard777
Not sure where the link is for ATS4 so I will simply post the file here for convenience