I have been to several festivals this summer and the KPA seems to gain popularity more than ever. Traveling to gigs by plane is great if you only have to take your KPA with you. But wouldn´t it be even cooler to only take an USB stick with you? However i see problems when using your own backups on rented or shared KPAs if the firmware of the KPA does not match the firmware version that your rigs were created with.
Maybe an additional backup/restore function that would include and deploy each and every aspect of your own KPA to other KPAs could provide some extra comfort here. Maybe this method could be temporary only so that after finishing your gig the previous state including OS+Rigs could be restored while leaving no traces of you on that KPA.