I own OnePlus 2 right now and keep playing around with it quite often.
Here are some experiments of mine which I have blogged about.
After using my OnePlus 2 without playing with it for more than 10 months, I decided to root it to use my device to the fullest. I like automating a lot of things and I am a linux fan, so I wanted to install BusyBox on my phone along with apps like Greenify, etc. So I decided to root it.
A few days after rooting my phone I decided to installed CyanogenMod 13 on my phone.