There is definitely a need for an extra client portal permission. It should be between the "Read only project collaboration" and "Full project collaboration". I want to be able to allow client to comment on project tasks I have created but NOT give him the ability to create new tasks and make assignments. Right now, I give full access to the client because I want to allow for commenting on tasks but, of course, most of them, mess about in the project and create new tasks! It always happens and it drives me crazy. I can't believe it has not been mentioned before. I remember creating a feedback topic on this a while ago but there is nowhere to be seen.