Just curious about what people are willing to try when it come to custom ROMs... The Nexus 9 is a 64-bit capable device and AOSP allows for 3 variations in the build

1. 64-bit with 32-bit support (like the stock ROM and this ROM here)

2. Pure 64-bit (no apps with libraries not in 64-bit format would work)

3. 32-bit only (Well, like Android for pretty much every device, though I think Bluetooth doesn't work in that case)