Buffs

So I was really liking the buff system until I encountered the second level of buffs.

10 x fish = 30minutes double production
40x fish,20 bread = 2 hrs double production (suggestion would be to boost the duration of this one)
120 fish, 60 bread, 20 sausage = 6 hrs double production (suggestion would be to boost the duration of this one or lower the requirements)

Unless I am mistaken you are been penalized for continuous time, because 40 fish x 30 min = 2 hrs of double production - what is the incentive to use the 2 hr boost?

Now my requests on buffs

1. If I buff a building or a friend buffs a building, it would be nice to see a buff timer on the building
2. Ability to have a log of friends that came by and buffed (so you can repay them)
3. Be able to provide a list of what you would like buffed when friends visit

Thanks

Lobengula