Hello,
Thanks for your suggestion!
For now, I don't plan to add a GUI for configuring the keyboard shortcuts. If the app launcher you use is pretty common, I may consider adding additional shortcut keys (as I did for Mac shortcuts.)
However, you can edit dreampie.glade (found in the share/dreampie directory) to change the shortcuts - for example, to change the ctrl-space bindings, change the line:
<accelerator key="space" signal="activate" modifiers="GDK_CONTROL_MASK"/>
to something else.
Have a good day,
Noam