To the best of my awareness it's not possible to run an extended sim without supervision, since it will either crash or the bots will extinct - and its not particularily useful for forced evolution.
I used boom-and-bust feeding cycles, followed by periods of "feeding trough" competition, followed by more boom-and-bust cycles. At times I would use drifting veggies, at times blocked ones. At times I would significantly increase the friction variable.
And every now and then I would throw in a competitor species, usually I_Flamma since its the most deadly stock bot. At first the I_Flammas would rapidly take over, but after awhile the bots developed strategies.
I began with C_Anscestralis, but the present bot code is entirely different. As I said, mostly junk, but some of it must be doing something.
Anyway, the bot I'm writing now will be somewhat more sophisticated, but I'll run it thorugh the same evolutionary difficulties and see where it ends up.
I'm a member of the zdaemon gaming community - zdaemon is a win32 doom port. The bots are quite stupid, and I was hoping that I could port some of the DB bot DNA into the zcajun bot code.
BTW, I did download some of the present top bots. Destinatus_Preliator utterly stomps my bots unless outnumered 80 to 1. But that's what you get pitting a dumb but evo'd bot against a monster like that.