That could be like the feature I'm asking for, but it isn't the feature I'm asking for. I want it where I can potentially see the full topic at all times at the top of every channel window if I so wish it. Either multi-line or single line that scrolls.
Right now mIRC doesn't offer me any option except to 'view the topic' at any time I wish, which interrupts the flow of the chat of the channel.
If you don't want to force this on anyone, and want it to be optional, this sounds exactly like something the scripting engine was built for.
This is scriptable. You can implement all the features you want there and distribute it to whomever you think would also want it.
I tried for a script of this first, but none of the results were close to what I was looking for/seems possible without the use of a .dll