Not really very specific but the stumbling points for me were:
- Not having an out of the box provider for sql 2008 using change tracking for both offline and collaboration (and a good fix for the problem where if there are records in the table before cc is turned on they are all treated as one version and also there is a similiar problem where if you insert records in a batch then sql cc gives them all one version and thus the batching gets overloaded)
- Transaction per batch in collaboration
And a tall order - do away with offline and collaboration and have just one mode where all providers have knowledge optional and the SyncOrchestrator must have at least one provider with knowledge.
* Note: I have no formal CS education, so take all advice with caution :)
