I've completed two days worth of Heaven quests so far, and 2 days of Nirah's quests...and I gotta say, Nirah's are more satisfying. Why? Because Nirah gives you currency, exp, and impression for completing his quests, while the Factions (or Heaven at least) only give reputation. It's rather disheartening to hunt down 10 demon scales, only to get some rep in return. No experience, no impression, not even any blood beetles, a dirt cheap currency.

So my proposal is to have Heaven and Hell's daily quests give exp, impression, and currency (either shop specific or BB) like most dailies for most events. I couldn't find any suggestions for this, but if you know of one, please, link me to it!