It would be really nice to block fire & laser (and perhaps other types I have forgotten about) spitters from being able to shoot at targets that protected behind walls.
It would also level the playing fields between different bug types, as currently some are MUCH more dangerous than others.

edited*

This mod is an exact copy of the “Rampant, fixed” mod. This mod is not intended to include any features of its own except for the "No death landfill" part, because that was just the removal of one line of code :). Please submit your feature requests to the original “Rampant, fixed” mod, which is linked in the mod description.