Not much of a contribution to the conversation, but I've been running kitty for ~two years and it has served me really well. It's reliable, fast, great. Only thing I'd wish it had was (more intuitive) way to re-arrange panes / layouts.
I have been running Kitty for just as long but never use any layout and pane features. Serious question - why would one want to do window management in their terminal vs something like tmux or screen?