WG, what's the deal with redemption code missions?

Hambijon:   On a more serious note, these codes provided us with an alternative format to gather more data on what players wanted in terms of missions or event.  Yes, one of the concern with the missions tab clutter, but that wasn't the only reason.  With the codes, we were able to add the "cash back" function to the T110E4 on track for example.  This isn't a permanent thing by any means, and we have expressed the community concern with our developers as well as our own.