To allow for faster attacking, I've seen several users suggest adding a feature that starts the attack search sequence when an army camp is x% full. The downside to this is once you've clicked "Attack" any newly created units won't be included until you go back to your home screen.
If the "Attack when camps x% full" feature is implemented, a possible solution could be to also build a mechanism to automatically hit "End" after 10 skipped searches, then hit Attack again and resume the attack sequence appropriately remembering the # of skipped searches for adjusting search parameters.
This will allow any newly created troops to be included in the attack once it does occur and it would only have a negligible impact to the search time.