I been a member here for many years and the board has two main purposes customization (rooting, kernels ... etc) and support.
There are few things people should keep in mind.
Few people create a thread and say this device is great.
Get a huge battery and use your device to full potential
No longer available on Amazon
It has bloatware (Nova Launcher can hide this)
Locked bootloader, I have not rooted anything in ages.
My biggest pet peeve is that March next year you will be wondering when will you see Android N.
The next biggest pet peeve is the small screen.
Call the Nexus 9 many things.
eBook reader, movie player.... but never thought of calling it a paper weight.
I believe 5.1 is going to be out soon but even if it never came out this is best tablet I owned.
Factory resets I never found fun.
I lose what progress I had in my games, bookmarks etc.....
But after manually updating I had to do a factory reset, most of my apps were crashing at start.
Factory restart .... no crashes.
I do not find Android ...