> For functionality like that it sounds like a mailing list would fit the use case better.
Then you're looking at an email with the visual noise of recipients and whitespace and signatures, and if the UI is really bad (mailing list websites, for example), every message is viewed in isolation without the responses.
I totally agree on the UI disaster that a lot of those mailing lists are. But it seems like the solution to that would be a better mailing list ui, not to throw the whole lot out and start from scratch.
The problem is: we're removing features one by one which help dealing with mailing lists. Most modern mail agents e.g. miss the threading feature, IMHO totally a must-have for mailing lists. Things don't get better, they get, in an attempt to over-simplify email, worse.