Features for a Tablebase data mining tool ?

[Wulff]

Hi,

I posted a question about a data mining tool for tablebases a while ago.
There has been no answers, and since I have just had a breakthrough with my own generator (bug hunting for quite some time, finally nailed the bug that had me pulling out my hair), I have decided to expand my project with just such a tool.

So, my question to you gentlemen is: What features should I put in ?
I am thinking something along these lines:
Export of positions to a FEN file , with various filtering options.
Export to .pgn of positions+variations, again with filtering options.
Printing options. Word/PDF.
A chess board to explore things "live".
Statistics.

Anything else ?

Suggestions wanted.