So for the vegan roaches. I just cleaned my bins today after two weeks and I only found one death due to me setting a water dish on one and squishing it. This is a huge difference compared to the past couple times i cleaned where I found several unexplained deaths. This may mean nothing about the effects of high protein diets. But i will update you in two weeks when i clean again. Also i found my production a bit larger maybe 2,000 larger. But again this may only be because i added 113 new females to the breeding bins.
As for the experiments i haven't added the other additional containers as of yet but the two i do have there are no significant differences that i can tell but one thing i did notice is that they do prefer wet dog food over many veggies and fruits. Wet i mean i soak dry dog food in water and blend it with carrots cheerios and a few other ingredients.

what you mentioned about space jeff. I do have my bins packed with egg crates but I do think i can fit a few more in. I also use paper towel rolls and toilet paper rolls ( the card board part of course) to fill in the empty spaces.

over all my colony is doing a bit better it is kind of a pain only feeding veggies because they bring up the humidity levels drastically. But i can use extra humidity with my ceramic bulbs. The roaches seem to being handling it well.