Members get Bonus xp, which I really like for grinding Especially where I'm at in Kanto's E4. For when you're just normally going through all the normal gyms, I feel it would be overkill and take some of the difficulty from the game. That's why I figure you can add a way to toggle the gained xp from battles, that way when you're going for a hard grind you can get extra xp, but when you're just advancing through the gyms you're not demolishing everything in your path. Just a thought of mine. :)
Thanks for the thought.
-TheTooj