I'd rather have a wine rack than a dishwasher.

I would not, I would use the area for extra storage.

I'm with mdln. If you care about your wine, rather than having a couple bottles around to grab and look nice, keep it somewhere cool.

If you want to have a wine rack it should be stored lower and not in a high cabinet unless you keep your home on the cool side. If you can create a rack in a base cabinet - that would be best. A wine refrigerator with dual temperature for red/whites would be even better.

The heck with a wine rack. What about a liquor cabinet? Lockable, with heavy duty glides for the roll out.

I wouldn't. Not enough room for any significant amount of storage and terrible storage conditions for more than a couple days. Too much space consumed to keep a day or two worth of bottles.

The wine rack is about 30" wide by 18" high, I believe.