I've been having a few thoughts on the decision of each next round.
My idea was that every entrant submits what he/she would like to see the following week along with that current weeks image.
If anything it will keep things flowing nicely. The only downside I can think of is some people having the same ideas and then there being a bit of nagging at each other 'you stole my idea' etc.
Think it's worth giving it a go next week?