No joke, I was just about to post a topic like this when I saw yours. I don't know if you have this saying where you live (is it Austria?) but in the USA we say that great minds think alike.
I didn't know it until recently but it's actually quite simple to add new packs.
The only one that I have completely figured out atm is that I'd like to feature the silent bullet blocktraining levels as a level pack.
After that I wanted to make one called "Maximum Speed" and one called "Beginner's journey." I like your idea of "Snowy peaks" quite a lot as well. It also might be fun to do one called "Cirpachan Chaos" that features extremely difficult levels. Also just thought of "Dizzy Downhills" and "The Melting Pot."
Update: Here's a start on some of them. Feel free to make suggestions. Given that I'm the one who made these lists they are made up of my favorite levels so it might help to have some other people work on them as well.
4 Elite - The way of God
A different world
Cirpacha's Psychosomatic Exaustion
Magic_Bunny - Awesome
FAST and Silent Bullet - Electrical
*Awesome~Style* - Merry Christmas
DolAmoth - This World Belongs To Me
Drunkard's Mental Patch
Silent Bullet - The Pyramid of the dead Pharao
FAST and tumo - Forbidden Mirage
HeXeRMaN - Cave of Awesomeness
A Mountain Trip
Hiddo - Clueless
Hendrik and Moe - The Ultimate
TyItalis - Easy Level 1
Shmolagin - 30 Seconds of Speed
Speed and Ice
Hiddo - Odd
*Awesome~Style* - Beach Time
A Christmas Present
Root - Level 1
Lefthander - Quick Classic
Unknow - Poofy
Ravaged Mountain Range
MTK - Return to Electro
MTK - Life beyond civilization
The Melting Pot
#1: Adventure Fun!
Bored in Calculus
SeRe - Build your level #1
manul23 - Upside Down
Stewan - After War
Sunshine, Lollipops and Rainbows
KACPU and tumo - Zombies
Moe - Straight Away
Hendrik - Experience the Classic
Lord Kacper's masterpieces - Mountains