Adding files to the DPR file vs project paths in Delphi 2010

Question

We are just migrating from D7 to D2010 and are having a debate about cleaning up the project paths. We have a number of directories with a large number of Pas files that are

Answer 1

The comments about speeding up Insights got me intrigued and I will give that a try but so far I never included shared units in the projects that used them. Instead I created packages for each library and added them to the project group (mostly for organizational purposes only, i.e. I never actually compile them as runtime packages). I found this easier to manage (especially with all the recent improvements in the project manager) than having all files in one project as the folder hierarchies inside the individual (package-)projects won't be as deep and especially there's no ".."-level that way.