It is difficult to answer this in a comprehensive way, because the the two products are so integrated. It is always fine to create a Luminate Support case, and we can inform you if the feature is out of scope. Here is a partial guide:

Primarily Salesforce
  • Reporting
  • Custom User Profiles
  • Custom Fields
  • Workflows
  • Imports/Exports
  • Dataloader
Primarily LCRM
  • Batch
  • Pledges
  • General Ledger Posting
  • Campaigns
  • Direct Response
  • Events
  • Grants
  • TeamRaiser
  • Duplicate Management

See Submitting a case to Salesforce