Thanks to you both for the intersest and info!
I agree with you Jeff that enhancing the size and diversity of general habitat will certainly help build the basis for a foraging type food web. I think it still may be useful to look at either creating or helping hot pockets of growth that may be protected from predators other than humans interested in the "harvest" or just allowing access to the chickens or other livestock that the protein is intended for. Raising the crickets, mealworms or other items in-line with what you mentioned above is definitely what i have in mind.
An example from our property in NC. We hand dug a small (couple thousand gallon) pond in the lowest area of the property where water already tended to collect. Since the soil was a hard red clay it held water well and after a couple rains remained filled from that point on. within a month, the first frogs had moved in, then crayfish, water boatman, etc... this all happened on it's own even though the nearest body of water (a small lake) was a quarter mile away. very fun!
The first couple years, the toads and frogs (several species including tree frogs) tended to lay many many eggs and the tadpoles all did very well. we would have thousands of small toads roaming the gardens throughout the summer. Then we did a very ignornant thing and introduced fancy tail goldfish (large ones) and a bullfrog in to the pond. within a couple of years, we no longer had so many toads or young frogs hopping around, bu tthere were still some to be found. nature found a balance and the pond has done very well despite the many goldfish and several enormous bullfrogs that now live there.
Anyway, the point i'd like you to consider is that with many small ponds and some of them having a protective mesh over them, i think we may be able to foster an environment that allows for usable population explosions from some of these critters.