I've been running this now as my daily driver for a while and I haven't encountered any of these problems, other than the DSPManager. I have the Genius button as stock (I use Genius a lot), I did flash the non-paged app drawer and no recent apps, but I didn't flash the custom app background as I don't have a desire for it.
Phone: HTC One Silver 32GB (T-Mobile)
ROM: HTC-T-Mobile stock 4.4.2/Sense 5.5 (rooted/S-OFF/Unlocked bootloader)
Kernel: ElementalX 14.0
Tablet: Nook Tablet 16GB
ROM: CM 11-M5 with stock kernel