There are a number of items that developers have had on their wish lists to tidy up in future fork events.
An email from Matt Corallo with the subject "The Great Consensus Cleanup" described a "wish list" of items developers were keen to tidy up in a future soft fork.
The Hard Fork Wishlist is described on this en.bitcoin.it/wiki page. The rationale for collecting these changes together, is that if backwards-incompatible (hard forking) changes are being made, then we "might as well" try and get a few in at once, as these events are so rare.