Dell's XPS 13 fills a similar role for me as a Linux user (also have a MacBook Pro but I'm using it less and less).
The XPS13 is the same size as the MBA11; I'm using an 11" MBA case for mine. It has a larger, 4K screen though and faster 4 core/8 thread CPU and better GPU.
USB-C on both sides and a MicroSD card.
The trackpad isn't as good as a Mac yet but it is acceptable to me and is improving all the time.
The XPS13 is the same size as the MBA11; I'm using an 11" MBA case for mine. It has a larger, 4K screen though and faster 4 core/8 thread CPU and better GPU.
USB-C on both sides and a MicroSD card.
The trackpad isn't as good as a Mac yet but it is acceptable to me and is improving all the time.