Overridable "helper" classes (IrcChannel, IrcUser, ..)

Hi,

I am considering to override some of the classes created and maintained by the IrcClient class, such as IrcChannel and IrcUser. I want to do this to add additional behaviour and data that might not be cleanly solvable with wrappers or extensions. This would however require me to override methods where IrcClient instantiates these classes and somehow return my own subclasses.

Would this be doable? And would it be possible to take this into account for the future development of Irc.Net? Something along the lines of factory classes/methods perhaps?

Thanks in advance,
Manuel