Nice Splash Screen

Just edit in /etc/default/grub the GRUB_CMDLINE_LINUX parameter and remove rhgb quiet.

GRUB_CMDLINE_LINUX="rd.luks.uuid=luks-3c9b6347-1d19-4191-af16-4c156d1e8252 rd.luks.uuid=luks-9c380ed4-cac0-4112-a406-17de8c5b96e1 rhgb quiet"

After that you need to rebuild your grub with something like this:

grub2-mkconfig -o /boot/grub2/grub.cfg

And now you have a fancy splash screen with text output.