Hi,
First of all, it will be about mog kiosk, so if you're here to whine about it, please choose another topic :D
So I was thinking that all those minions/music/emote we get when purchasing goods in the SE online store or when pre-ordering an expansion are cool. But past a certain date (about 2 years), those codes become unredeemable and thus can't be obtained anymore, forever.
But why not propose those items through the mog kiosk once they aren't redeemable anymore? Let's be honest here, a huge part of the goods are mostly boughts by players who want the in game bonus for minion collection. And those same people are sad when they realise that there's a code not obtainable anymore (Before Meteor/ARR OST, 2.0 pre-order). You know how many people would pay the mog kiosk for them? A lot. And that would be even more budget for the future of the game.
Please, consider adding unobtainable goods' bonus in game items to the kiosk for those who weren't there in time, just like past in game events items (which were basically free).