Description of problem: I suggest changing -scim-tables-chinese to -scim-tables* in livecd-fedora-desktop.ks to avoid the less used scim-tables packages being included by default. For F8 I think we need to visit which m17n-db maps may be included.
thanks, appears to be fixed in current version (livecd-tools-011-1.fc8
(and the current livecd-fedora-desktop.ks pulls in all the language support groups so that should take care of the m17n maps:)