try doing a calculation for output of granite pit -
at level 5 production in 6 hours is roughtly 35 granite - worth about 110 coins
uses about 100 units omnifiller - price 600 coins
- as I see it - when getting granite from a granite pit you pay 600 coins for granite worth 110 coins - buying in TO price would be 1/5.
granitepit is not a gift to the receiver, but to the high level player who gets refills from advs and sell them on TO.
if you have the fillers, you can argue they are free - but if not used they could be sold - or used better for goldmines
you could buff to improve output - but buff has to be produced or bought - so would increase cost.
deerstalker on the other hand will at level 5 get you meat for about 30 coins without cost - every 6 hours - unbuffed - and on top of that save production of moschus.
Prices are from tradesheet. - if my calculation is wrong - please tell me where.
and quests for level 36-50 players are not much easier than those for 51+ players - based on resources I think they are a lot harder ( also see on guides showing that some lvl 51+ players already finished stage 4. )
So - if there is to be another crisis quest - make quests harder for high level players, the usefull buildings as reward to low level players and the decoration buildings ( nursery and pit ) to high level players ( some has said they would like to have had them as reward ( instead of deerstaller ? ) )