Rooting, Roms, and Battery Life. New to the nexus 6 topic

Hey guys, just picked up the nexus six and am writing this all out on it right now so excuse any errors. I just have a few questions about what to expect from rooting this device/Roms in general. Roms for the device anyways...


So I've heard encryption slows the phone down by about a 50% mark and am curious as to peoples experiences before and after decryption. Does it truly feel to you that your device is 100% faster? If so, what makes you say that? The phone feels plenty fast to me at the moment, but I'm always interested in a little more...

I've also heard about the horrible battery life of the phone being caused by a sensor_Ind wake lock, among other things like the large screen and resolution. Has anyone experienced long enough to prove its not placebo, a noticeable, or even dramatic increase in battery life because of a ROM/kernel/theme. If so, what ROM/kernel/theme helped you the most?

And lastly, has anyone tried any of the more experimental mods out there on this device? Such as adding multiwindow, or blinkfeed? If so, how did it work out for you?

I'll be trying a lot of stuff while here :) so I'm just curious to ask the others out there how things have gone so far for them.