With the water dish it would be impossible for him to get to, let alone under, the cricket container, but I get your point.
What about if I put a fake siding in the tank. Basically section a small area off to keep the crickets in?
I swear this isn't just me being lazy. I'll continue to do what I've always done. I'm just curious if this has been done or not and if this is a goofy idea (I'm also making plans on creating an awesome double enclosure for when I get a second pacman, so these types of ideas keep coming to me)