Fancy vs. Resilient

There are a few things that Revit can do that we don't use.  

One of the first things I learned how to do is to automate duct pressure calcs up to the AHU from the air terminal. I did it on a few small projects that I exclusively owned.  

We almost never do this in real projects even now. 

Why not? Because we decided that the cost and risk of maintaining that particular level of sophistication of our models was not worth it. 

We have many generalists, and a couple pros. The generalists, in general, aren't operating at the level of being able to maintain a model that smart and fragile. (It's not that they aren't bright enough to handle it, it's about the depth and breadth of proficiency they are asked to attain.)

The pros, typically, are too busy putting out fires and air dropping into crisis zones to build and maintain those smart fragile models either. 

We bias our workflow towards 'hard to break.' It's so easy to break one little duct fitting and bugger the whole calc, particularly on projects where you have dozens of users in the model.  

Will we do full air pressure calcs as a matter of course eventually? Almost certainly. (And we do use a number of smart/automated processes already.)

But we make sure we can nail the essentials as an organization, consistently, before we try to bolt on the whiz-bang stuff. 

Careful not to try sprinting before you have the whole walking thing down pat.  

(The danger, of course, is to get comfortable with the basics and then stagnate, get left behind, and fail to utilize powerful features. It's a tough balancing act.)