Fluid Position Management?

One of our upcoming projects will be to convert our classic Position Management screens to Fluid. So rather than wait for a conference, I'm inviting feedback here from anyone who has tackled Fluid Position Management. Please share any nuggets you have, surprises or learnings. Thanks!

@Bob Laedtke I am a consultant who is putting Fluid Position Management with Position Dept Budgeting, and have noticed three things. First, the Job Drop Zones are not in Position Data, and so I ask when those are going to be added? Two, if you are not tied to Commitment Accounting and/or PS Fin Budgets, is there a Drop Zone on that page that will allow us to tie to a third party system. Lastly, there is no Excel to CI load process to get the Position Budget information into PS like there is for Position Data.
I am currently creating a Staging record that is a Job to Position back generation position, several staging records for all of the Recruiting Systems both active postings as well as proposed in approval. In excel, I am trying to auto-generate the position number assignment, and then assigning the Position Reports To, and only using VLOOKUP, it is difficult. If anyone has a better suggestion, please send it my way.
Thanks and have a great day.
David L