reason to do major compaction after split

[Sergey Shelukhin]

Hi.
Is there a reason to do major compaction after split, instead of allowing
the reference files to go away gradually as the normal compactions happen?
I could think up two reasons - region with reference files currently cannot
be split again (not clear why not though, could just create more
references); and avoiding load on the same datanodes from both new regions.
Are there some other reasons?