I have a problem with that too.  I'm sure they'll come up with something more restrictive but still do-able.  I think you'll have to do it like CDs where you have to agree to a term-a length of time.  Maybe these terms can be short to long periods of time.  They could also be set so that instead of date/time, it's set to release after 1, 2, 6, 12 payouts.  Immediately after the final payout, your funds are released.  This will minimize wasted time.  Then coins could just roll over, or be removed (even automatically) All this would be possible with smart contracts which Evolution will be capable of.