ah, so basically you need your bot to be on more channels than mirc supports?

I don't know of any reasons that the max amount of windows that can be opened can't be raised.
I assume if all channels msgs to 1 window was implimented, it would be like /dqwindow. but unfortunatly i can't see this being added due to the fact that the average user wouldn't use it, but thats not for me to judge.
Would be a good feature for bots none-the-less.