I think that Some small changes to CaseFix Script could make the desired result in MM.
Also if you want to add some info at the end of Title It can be easy done with MM script.
Can you elaborate your needs I think that there is good chance for you to get someone interested to make a script for you.

A great batch file renamer is

http://www.1-4a.com/rename/

I second check boxes for Live, Cover & Remix. Even better would be an auto-check feature if it sees these words in the filename. Also a field called "Contributing Artists" or "Featuring" would be sweet.

additionally maybe some extra file info like a checkbox whether it is


live
remix
cover

because else mm identifies these songs as already existing.. (esp the live button )

Some smart renaming tool would be handy like changing

e.g.

kelis_ft._andre3000_-_millionaire.MP3

to

Kelis feat. Andre3000 - Millionaire.mp3


I mean some smart tool realizing exisitng artist and checking spelling would be extremely handy but i can imagine also extremely hard to make

Additionally as many mentioned would i like, the portable mediadevice support but i think u all already add it to the next version;D

GREAT JOB