@Anonymous,
Good question...
Some things to consider...
Why are you migrating? Are you suggesting they ditch SketchUp for Revit? Or are you proposing substituting AutoCAD for Revit?
How will Revit help your office? What's your plan for implementing Revit? Am I as a staff member expected to learn on or off the job? Will I get time to learn on the job? How will I be trained? One on one or online? What projects will this initially effect? How am I expected to meet those deadlines if I am slower at documenting? (which they likely will be for the short term and the stress and frustration this can cause some users should not be underestimated).
If we are using SketchUp how will this work with Revit? If not, how do I design in the short term?
These are the types of questions I tend to hear and see in my work. No one tends to knock back faster and better ways of doing things if it benefits them and they see actual productivity gains for the team. So then you have to ask yourself, is it Revit that is the problem or the unknowns that come with the prospect of learning new software and implementing change? A busy office, tight deadlines now compounded with on the job learning.
I find if you are prepared and run a session answering these types of questions & discussion with staff, you will get more buy in.
As for SketchUp, it's just another tool in the toolbox and I don't think trying to get users to stop using it is the right way to go. It is like telling an artist they can only paint with a paint brush. There is a reason why I think many people often fail at convincing sketchUp users that they should use Revit. It's because they serve two different purposes.
Personally, I find the problem with SketchUp is rarely the tool itself, but how it is integrated into workflows, often as a conceptual tool, it is being used for far too long into the project, resulting in duplication of work, compounding the belief it is the tools fault.
Talking about FormIt 360 vs SketchUp is a better discussion in my opinion.