If you have 600 jobs every day at 11AM UTC, spinning up tons of machines to work on them is not exactly smart. Especially when most of them are tiny jobs.
Maybe a check-mark that says "I'm okay with this being rescheduled slightly" would be good.
Crons that are more important could be charged at a higher rate, but they'll be prioritized on runners or whatever.
Alrighty; just my thought: a little detail about this being skipped, or likely to be skipped, or some transparency on the issues with cron would be nice.
