I just wanted to inform you about two apps I found recently that appear to boost performance and battery life a bit.
The one that boosts performance is a better and more efficient version of Seeder. It's called SeFix and (as opposed to Seeder) really does seem to work!
The second (the battery booster) is actually way more versatile:
It's called Greenify and it lets you disable apps to run in the background.
Eg. I set it to decline the Google Maps request to run in the background all the time; because as we all know, Maps often sucks somewhere near 7% of the battery.
(However, it needed me to root uninstall it and then install it from the play store, so it wasn't a system app anymore)
Anyway: I hope this helped and that it makes your device nicer to use (like it did for me)
Last but not least: as you are probably aware: Orange Backup is a backup app that lets you do complete (CWM or TWRP style backups) without having to go into the recovery!