I think that it would be great to have mods for this:   https://store.steampowered.com/app/1150440/Aliens_Dark_Descent/   An interesting option would be to replace the marines with ((partial) nude) scientists, which can not directly attack the aliens, but can for example install additional sentry guns or motion scanners. I guess that removing the ability to attack would be no problem balance wise, because avoiding fights is already the best tactic in my opinion.