I don't see an option for changing the window top bar min/max/close button to the left side (my brain just won't rewire to moving to the the right side for those actions), and with colored circles (it's a symmetric aesthetic and more consistent than 3 separate icons/symbols for the actions).
I love that the custom theming is limited. KDE just has WAY too much in terms of settings. You are doing a great job with cutefish and it's need-to-tweak-almost-nothing-out of-the-box approach, and we need a qt desktop with this philosophy.
But Please please PLEASE add the ability to change the window top bar min/max/close buttons to the left side and with the ability to set colored circles for them (I have this through a theme in gnome). I know this seems like a very small thing, but it's big for me, and this is literally the very last thing tiny thing that is keeping me from installing this on my main system, even in it's beta state, and finally being able to abandon the ugly gnome GTK stuff and use beautiful QT. I hate the thought that I would have to pass on this DE over this one single little detail, but it may come to that if not implemented, and would have to continue wait for the next perfect DE (which would be a fork of yours with this simple option)