Building a goat barn

I am in the process of planning a new goat barn for our small farm. I am looking at a structure 14' x 40' in size, and wondered what ideas people had for things to include in the planning. I have a few ideas for floor plans but wanted to make sure I havent overlooked anything before we move ahead. Thanks for any suggestions.

Be sure to include something they can play on, such as stairs, tires, etc.

I don't know what climate you live in or what type of goats you have (meat or dairy), but do you NEED a goat barn? I live in a very mild climate, rarely under 30F or over 85F. They live outdoors most of the time. I have places for them to get out of the rain that have dry bedding and keep their minerals dry. I keep Kikos.
If I were to build a goat barn, I'd leave it open and put up pens as needed.

You will want; hay feeders, water troughs or licks-its, mineral feeders, all wall hung (need to be separated by several feet at the least) or free standing if a double sided hay feeder. Depending on the size of herd you might leave most of the space a single open area, the goats will love that, whether meat or dairy goats. I would also include a separated area, that is completely closed off from the goats for storage of grains, treats and hay, a few stalls for separating when necessary (mother and new born, sick goat etc.) and maybe a space to do hoof trimming. If they are milk goats, I would have the milking station in a different place than inside the barn, perhaps an add-on type of room for that. If they are not going to be able to go outside as they want, then definitely build a play ground in the barn.