Not a feature request as such, but given that the level unlock prizes have been changed, it would be a good idea to also update the ingame messages given when you hit a new level.

Last week I reached level 16 and told (both in game and in my “Your week in Zwift” email) that I had unlocked the neon shirt(s), only to find no such thing in my garage. Further investigation showed that this was the old level 16 unlock, and I had actually unlocked a new pair of specs.

Might be an idea to fix that.