Specifically the situation I'm thinking of is you have a large asset like a .psd that is 200 MB. An artist goes and changes a few pixels and checks it in. Assuming deltas are not kept thats 200 MBs that anyone that updates to his clone/branch will have a history off. Given a full development cycle that is a LOT of information to pull for each client.
What I would like is the ability to mark files like these as "keep history on server", much like traditional centralized VCSs like SVN or Perforce. You may lose the benefits of a DVCS for these files but I am willing to accept that as long as I can use one VCS (as opposed to 1 for assets and 1 for code).
Any suggestions on how to do this (if even possible) would be greatly appreciated.