A lot of the options added for the sake of appeal were added prior to DLL support. This was one of the reasons for DLL support I would imagine, at least, one of the many reasons.
There should generally be no need to request many more features for mIRC in terms of aesthetic appeal that cannot be done with some form of DLL now.
Now with that said, just to clear something up, i would imagine there couldn't be a dline -l or aline -l to a channel window, otherwise it would break mIRC's nicklist handling. I would imagine it doesn't keep an internal buffer of users in a channel aside from reading from the nicklist? Who knows, but that's how I would do it....since normally you shouldn't change that anyway?
