Potions n' stuff!

Hello! I am a huge fan of Minecraft! I often like brewing potions to make traps and stuff like that. I noticed for awhile now how you can only make potions with one effect without cheats. I would like if you added a way to make a potion with mulitple effects! I also would like if you can add more effects to brew including - Haste, Absorption, Saturation, Mining Fatigue, Wither, Levitation, Darkness, Hunger, Nausea and many more! It'd be super cool to make a potion update.