I see no problem in providing this as an option
That's where you wrong. "Option" means that you (as a designer) have no idea and passing responsibility to user side.
IMHO: this option add no usability and just clobber interface.
Well, I personally can recognize the file type much faster by the image than by scrolling a big file name that usually does not fit the column width. Yes, it is more useble in my opinion. And as an option, I mean, the user enables this if he wishes to do so. I still do not see where I am wrong, I even fail to understand how this word even logically applies to my statement.
If this "feature" is disabled, the overhead is minimal, we have much worst cpu intensive options in the preferences box. If the image is in a separate column, the application just looks the same, so, no clobber if you don't want.
I also think that disabled is a good default, it is just another nice feature to have if you want to.
Remember, this section is called "feature requests". And its not like he is asking for webcache.
I'm just waiting for Kry to add one column
