I'll make this ROM slimmer after I get Z2.wish that your next version got option for slimest rom with black app. ,stock email & twrp recovery.thks.
Any chance you can enable ART? Or give us the option to enable it?
Addon zip for odexed (ART can't be used with deodexed) system and runtime selection in Developer options:
https://drive.google.com/file/d/0B4fBjQuS8IxPS3YtRlNHNkxtVlU/edit?usp=sharing
Please make a backup and try.
[UPDATE]
There is no libart.so in 402 firmware...
In older firmware there was libart.so, so Sony removes it.
I'll make this ROM slimmer after I get Z2.
For black apps, you can use Holo Themer to make almost all apps to use Holo Dark.
I won't include recovery since Z2 has to use custom / adv. stock kernel at the moment (double TWRP)
I created zip to patch Settings.apk for .69.
Please flash .69 FTF and install ART_test69_signed.zip in recovery.
https://mega.co.nz/#!D8hxUa5D!c_jdxxjqZfFMFFZowTts3Crq9XdzrjtcRtyhSpxz4Nw