Include a writing test. Writing tells a lot about the candidate.
It takes so much faith for someone to apply to your company. It is wise to let your applicant know how exactly the schedule will be, so you do not waste their time.
Challenge every company to commit to give applicant who already in the process a reply. The further the applicant made in the process, the faster your reply need to be.
From start to finish. Between accepting the offer and start date.