I have just found a serious issue: Vermin.
They will eat the food and/or booze, unless you put a cat/kitten in every D-Cell. In this case, the generated rat corpses will produce miasma, unless you put them under sunlight. The best solution for this is to designate a 4-tile Refuse pile which has once seen sunlight and occasionaly dump all refuse onto a garbage dump tile (preferably also in sunlight). A magma dump is dwarfier but unrequired and more dangerous, as the D-Cells are stacked vertically and a single garbage chute will connect all the rooms, forcing you (when using the preserved dwarves) to either open all D-Cells simultaneously or open the upper D-Cells first and build a floor over the lowest now-unused chute tile, which can be annoying if you reuse the D-Cells. The magma dump pool needs to be cut-off from anything else, because we don't want anything annoying (disease/dragon/FB/fire imp/HFS/whatnot) to get in the D-Cells, and definitely not into many at once.
Another problem is the cats themselves: someday or other they will adopt a dwarf (almost certainly not the dwarf in the cat's D-Cell). I currently see no non-modding fix to this problem, but there is presumably no significant speed lag from cats seeking unreachable owners. The lag after the unsealing is a bit more serious. Go deal with it yourself.
So the most recent design is this one:
SSSnT8~~L
SSS231~RR
SSS23!~RR
Layout variations are allowed.
S: Still
8: Bed
n: Chair
T: Table
1: Seeds pile
2: Booze piles (2 to automatically get two barrels)
3: Food piles (2 too)
~: Fisher berry/Wild strawberry plots
R: Refuse piles
L: Lever/Dump zone
!: Cat/kitten cage
Needs:
11 building materials (9 floors, 1 Still, 1 Seal)
1 Bed
1 Table
1 Chair
5 Barrels
2 Bags
2 Fisher Berry Seeds
2 Wild Strawberry Seeds
1 Cage
3 Mechanisms (to destruct cage after sealing)
1 Cat
1 Dwarf
Construction Manual:
1. Channel out the space for the plot ONLY.
2. Over the plot, build following contraption:
Side view:
######
->~B~F
######
Top view:
######
->~B~F
######
->: Water input
B: Raising bridge
F: Floodgate
3. Link both "gates" to the same lever.
4. Repeat
- Pull lever twice
- Build floor over lowest plot field
until all plots are muddied.
5. Channel out future Refuse/Dump areas.
6. Floor them, as they have received the Light and the AboveGround.
7. Build the furniture/still/cage and designate the stockpiles.
8. Assign a Stray (!) cat/kitten to each cage.
9. Connect each cage to its lever.
10. Seal a dwarf in and tell him to pull his/her/whatever lever.
11. Designate a Dump Zone over the lever or optional magma dump.
12. Have Fun.
Any success/failure reports and/or suggestions are greatly appreciated!