I think this is because of color coding. It's the only sense-making reason I can think of.
Even though the documents start out contracted (10 lines of code), having a bunch of large documents can quickly take 10+ seconds per page view, very annoying.
I recommend [and|or]:
- Option to disable color-coding
- Option to disable color-coding only for specific databases because for collections of small documents color-coding is really convenient
- Automatically disable color coding when document is longer than.. 1KB or something.
- Color-code only the first 10 lines as displayed, only color-code full document when 'expand' is actually clicked.
[5) Magic super fast color coding implementation]