I can think of three considerations for a cron daemon: 1 . Minimal - its a cron daemon, it does not need to be complex 2. Active development 3. Anacron functionality As far as I can see this leaves us with fcron, dcron and cronie. Cronie probably has the highest assurance for upstream development because it is backed by redhat. But I think that having a cron daemon as default that has issues executing jobs on time and as they are defined is highly questionable.
