The things that annoys me about the Revit interface are that project browser contains so much information that it’s very easy to get lost (for me at least).
IMO, the project should be split into four or more individual palettes, Views, Sheets, Legends & Schedules, and then Families & Groups, etc, because by the time I’ve navigated to the section I want, I find it difficult to navigate back to where I was. Again IMO, if you split the Views from the Sheets (drawings), it would make it far easier to drag the appropriate view onto the relevant sheet.
Also, the fact that the font size in the Properties Palette, and Project browser, are just that bit too small, and it’s not possible to change it. I’m sure the font would have seemed to be the right size 20 years ago, but staring at computer screens for two or three decades takes it toll … 
Humm … I can see why people might be put off from Revit when one contributor describes it as “Revit Hell”, and we’ve just had another insightful comment that describes the interface as being like a tax return … 
Just for comparison, here’s what Vectorworks looks like, and yes I know I’m lucky to be able to spread the interface over 3 monitors, but that’s the big advantage of being the boss. I don’t need to justify any of my company purchases to the bean counters … 
