I was running i3 on Arch before. Then, I moved to Gnome Shell and have been daily driving COSMIC for a couple months. I think you will like it. At least on Alpha there were a couple rough edges here and there, but no deal breakers for me.
I was using Manjaro i3 X11 for 3 years. A few months back I switched to Arch Hyprland Wayland and so far I am very happy with it. I use it for programming, video editing and gaming. No major inconveniences.
