Options that it should be possible to modify:

1. it should be possible to give a private 'salt' to the generation of new names, in order to ensure that code do not get decoded.

2. it should be possible to control the comments in the obfuscated code, eg. remove all, keep first, add one custom. (personally I do not like to add the current comment telling everyone where to obtain the code used to obfuscate - it makes it easier to decode)

3. it should be possible to give a length option for the generated names.