I think virt-builder should have an option for normal people to print the full template info, but I guess that's up to you guys. I implemented it as -i/--info in my own virt-builder frontend by parsing the json, e.g.:

$ mkvm --info r7.2
template         : r7.2
osinfo           : rhel7.2
compressed-size  : 356163292
full-name        : rsaw's Red Hat Enterprise Linux 7.2
hidden           : False
arch             : x86_64
size             : 10737418240
notes:
Red Hat Enterprise Linux 7.2

THIS IMAGE IS NOT REGISTERED TO RHN/RHSM BUT IT DOES HAVE YUM REPOS
WHICH ARE ONLY AVAILABLE ON THE RH CORPORATE NETWORK.
REGARDLESS, DO NOT REDISTRIBUTE OUTSIDE OF RED HAT.

Details:
- Image in qcow2 format for easy snapshotting.
- LVM is used for rootfs & swap with default autopart settings so
    that you see what customers see.
- GRUB timeout lowered from 5 to 2 sec.
- Serial console is enabled (GRUB and kernel/init) and is primary
    which means you should use it for any rescue operations.
- The @base package group is installed (not just @core), along with:
    screen, vim-enhanced, kernel-doc, sos, elinks, setools-console,
    policycoreutils-python, psmisc, ntp, rsawaroha-release, xsos.
- All yum repos from DVD are enabled by default (base, Optional,
    HighAvailability, and ResilientStorage) as is the Extras repo.
    The debuginfo & source repos are also present, but disabled.
- RPM-GPG-KEY-redhat-release is already imported and gpgcheck=1
    is set for all enabled repos.
- The kdump service is disabled.
- Console login screens (serial/tty) print IPv4 & IPv6 addrs of all
    present NICs (thanks to update-etcissue-nics.service modifying
    /etc/issue at boot time to add escapes for agetty).
- chronyd and ntpd are both configured with RH corporate timeservers
    and settings suitable for virtual machines (chrony: "makestep 1 3";
    ntp: "tinker panic 0"); however only chronyd is enabled.