There's a nice trick you can do right after returning from an idling, which is switch quickly back and forth between the game tab and another tab in your browser. The idle earnings keep stacking up.
In BF, there should be an option of eliminating one undesired reward possibility (e.g. Event Points, Gems). I, for one, would never want to receive any Raid Points, as doing so would mess up my having my RPs numbered in multiples of 5.
Hax