I was wondering - since LXLE is based on Ubuntu and using casper - if you could add
support for the iso-boot/filename kernel parameter that lets you boot
directly from the ISO file.

See https://help.ubuntu.com/community/Grub2/ISOBoot/Examples#Ubuntu_12.04.2_.2864-bit.29 for Ubuntus wiki page about the feature and https://www.linuxliteos.com/bugs/index.php?do=details&task_id=42#comment138 for an example of how I use that feature.

But just like I wrote in the feature request for Linux Lite, I know
this is not an important feature and you probably don't have the
manpower. But maybe you're curious. :)