The reason PC Era's gun skin uploads work so well (I have 4 uploads on server.) is because the playerbase has only around 100-150 players. Era iPhone has 3k+ daily players, a large majority of which are Graphic Artists. In addition to the large volume of players and skins being imported, ALL of them have to be re-gani'd and re-SFXed for whatever reason. (ice_is_nice4, skin coordinator of PC Era told this to me.)

Too complicated.