Here are On-Screen button by 7OH.
Flashing it will remove AOSP lockscreen & power button reboot option.
Also, yesterday I flash .62 firmware to test codename_06, which come with Baseband 64. Using it the whole day.
This morning, I want to flash back I-Scream. I just flash NightElf kernel, do a full wipe & flash I-Scream (i forgot to flash baseband 70). It boot up!!
IMO, the battery life is better with Baseband 64 without any problem.