I'm sort of over super old houses. I'm really into mid-century modern these days. Big windows. Lots of light.

Low gas/electric bills

Real wood work.
Moldings everywhere
Ceiling medallions
Built ins
Natural earthy stone tiles in appropriate places
Everythng real - no faux stone, no faux brick, no faux countertops, etc.
Lots of natural light
Front porch

LARGE screened in porch with ceiling fans
Front porch with stained wood ceiling
Radiators
Kitchen cabinets to ceiling
Dry smelling basement
Original hardwood floors
Three bedrooms on second story
Sep. office
French doors
Permeable driveway
Soapstone countertops
Wooden windows
Closets
Formal dining room
Not too open of a floor plan
Main level family room
New and sufficient bathrooms (partial to single wide over double vanity)
Built ins
Dimmers
Non-obvious additions
Good neighbors
High walkability index
Garden space
Did I mention closets?

Pocket doors
Coffered ceilings
Butler's pantry
Sun porch
Crown molding
White painted cabinets (kitchen)
Wood garage doors
Wrap around porch
laundry chute
Marble in the kitchen
Skylights in bathrooms (awful for natural light)
Eat in kitchen
Heated floors

house numbers with character
ceiling fans on the front porch
flower gardens
wood burning fireplace or woodstove
antique light fixtures
built-ins, especially bookcases
original lead glass windows
bedrooms with sloped ceilings to reflect the roof line
a beautiful porch light
wood screen doors that make that great SLAP sound when they close
crown moulding
claw foot bathtubs
wood front doors that are stained instead of painted so you can see the beauty of the grain
copper gutters
door knockers
ceiling fans
extra tall upper kitchen cabinets that go all the way to the ceiling-- no soffits!
wood siding

Built ins - bookcases, cabinets, and linen closets.