Changing configuration in /system/build.prop according to GALACTIC™ Forced DeepSleep MOD | Huge Battery Saver really works and save my battery in A6000. I was pessimist after reading all the post inside mentioned thread, but over the whole night only 1% of battery was lost. Meantime there are no side effects of this change. I can recommend.
You can flash the module if you really feel like it does any improvements. But sadly this wont be included in the main tree because its nothing more than snakeoil and I have seen props as such in the samsung build.props I hope you understand