An apparent clarification of the distinction between vet reward wings and invention system wings can be found here (http://boards.cityofheroes.com/showflat.php?Cat=&Board=questions&Number=7593605&bodyprev=#Post7593605). Note that a) it's pretty much what you might expect if you think about it, and b) Lighthouse is a community rep, not a dev, but I figured I'd post it, anyway.