I think limiting the outflow of bots from a sim is a very good idea, glad you are working on this. The problem, of course, is the unequal speeds of simulations on different computers and the reliance in the current system based on cycles. As a result, a small fast-running sim can completely dominate the internet database at the cost to the slow more complex sims. I would suggest setting some limits on how frequently people can send bots and how many they can send per a given amount of time. Maybe something like no more than one organism every 15 mins, or a cap of 100 bots per day.