Just something that I know fellow Keyshot users have talked about. Rendering particles would be amazing and grass material is something we can use!
I put volumetric lighting on the list because the effect is in demand.
I have a feeling Keyshot will have these features in the future but developers just need more time.
Develop team should understand that when there is a Engine can render fast and get good result, many people will use it for making film, not only for product introduction. Maybe you understand the super happy feeling when creating a super romantic CGI scene with the sunlight shine through the tress or something else is the same. Volumetrics is necessary for every Rendering Engine ! :)