Would it be sufficient to just slap a big "Warning: Advanced Users Only!" label on the custom image option? I understand not wanting not-so-technical users to u

Would it be sufficient to just slap a big "Warning: Advanced Users Only!" label on the custom image option? I understand not wanting not-so-technical users to underestimate the difficulty of setting up a custom install and having a bad experience, but I think it's safe to assume that the not-so-technical users will be stick the default images, while the hard-core OS geeks will be willing to put up with, say, importing a QEMU or ISO image.