I agree completely. We intentionally designed the old interface to be information dense. When we made it slightly less dense, there was such a strong pushback that we had to add an option to go back to the more dense mode.

But there are a lot of users who don't care. And maintaining two interfaces is double the work of maintaining one, because you have test everything twice. And it's actually geometric, not double, because you have to test every new option combination in both interfaces.