Then it wouldn't. At least not for Mac OS X and its apps.
Looking at this from the netbook point, a netbook would have one of those at best, so things won't help there.
It could be argued that the MacBook Air was never "minimalist" because it has a 13" display and not a 11" or so.
Although my view differs from that. I like to think of the MacBook Air as a very thin (and light) notebook, and a 4.0 lb 15" MacBook Air is still lighter than the MacBook.
It has a 13.3" display because Jobs doesnt think anything smaller then that is usable.
The minimalism comes in the limited I/O options and overall uncluttered look.