My vote would be to leave it how it is.

But I'm always up for something new, so if something like that does come along - I would suggest it be an option the pond creator can have instead of appling it to every pond.

Currently lets say a pond is a 1 day pond. That means I know I can be gone up to 47 hours and still make the pond (That is if you make a move right when the pond comes available, and then make your next move right before it gets ready to time out the next time.) The way it is set up now give a little cusion of extra time, where a new system would start giving you many different start/end times - which would be good for players on-line multiply times a day, but could hurt others.

So an option would be good, a change for all would not.