CTP5 is great! As a developer, I am excited about the new MSBuild functionality. This will allow us to update our developer DB after each stage build.
However the data compare piece does not appear to have the ability to limit what is compared/updated on a table level (i.e only compare/update Users with age>40). Perhaps a bad example, but when your stage DB is 15GB, it would be great to be able to pull down a sub set of your larger tables to your Dev environment. Typically we only want to pull down data related to specific User Sets (ie. Users in specific companies etc.).

Feature Request: Sql Data Compare-limit what is compared by table
dc75
DiZASTiX
Point well taken that we don't offer any filtering of data compare as you have expressed in your example, but you may look into the advanced data compare options to reduce some data to be cached on the server . These are available at the fist page of data compare connection wizard.
If one unchecks the option for identical records, Internally, data compare would still fetch all the data from the server, but all the data which is identical, will not be stored / cached by data compare feature.
I will bring your suggestion forward to the relevant people for future consideration.
Thanks
Sachin