Where are all of the old Halloween Skins?!!

Hey guys,

Been playing this for an incredibly long time now, and when I initially started and was thrust headfirst into the incredibly accepting and respectful community who tried their best to not criticize me and be patient with my lack of skill (Lol I wish) - I came across a few skins for Halloween and was incredibly excited to buy them - given that this was years ago and I could afford RP about as much as I can afford the Twisted Fate's Pax skin - That sadly didn't work out for me.

However, To my dismay, The skins I had been hoping for to come back - Have done everything but.

So my main question to Riot/Rito/AnyoneWhoCanAnswer, Is will there be a chance when the old Halloween skins will come back? I've really wanted that TF skin for a while and have had no luck in getting it.

Thanks for your time.