I guess , it would better not adding INDEX feature.
Instead indexing, I think add some feature optionally:
1) It will be great, can search in other streams of files, such as Subject, Keywords, Category, Artist etc. Because often these streams more descriptive than Name of File
2) To search description files of downloaded filesthe huge number of files created by downloading. Often the name doesn't mean something. For example I type
WinHex in FARR, to find the file and I do not remember that it downloaded as
w13w2.zip name. but its description file (w13w2.
txt) file contains more meaningful info.
(sorry for bad English
)