I am releasing my missile widget. Its good enough to use now.
The widget is found at:
https://github.com/amnykon/ZeroK-widgetsJust copy the three files into LuaUI/Widgets.
You may need to enable custom widgets. You may need turn it on (alt-f11) and move the buttons to where you want them (ctr-f11).
I forget what the default placement is, but I think all 6 buttons may be stacked, worst default configuration ever. I would like to do more work on the floating buttons, but for now it works except bad initial configuration.
