Data files that are textual are not identified as text for preview
I'd LOVE for the ability at the enterprise level to be able to say that ANY file with a given extension should be previewed as if it were this other extension. This would both add extensions as WELL as override the Box.com default content type logic.
myCustomersOrderData.edi should be previewed as is it were a text file, so .edi as .txt
.json as .txt
.funky as .md
I say at the enterprise level so this works for manually uploaded files. However, if an appropriate attribute could be sent in the file upload|modify|version APIs, that would be better than nothing.