Is your developer using BSS also? If so, sharing should be as easy as giving them a copy of the BSS project file? If not, maybe they could purchase a copy of BSS so you can do this? Just an idea
I too would love the possibility to put comments into my HTML that stay there. There is also the ability to use the Labels of components to add comments in. There’s a setting somewhere in the project settings to allow this. I use the labels to help me navigate my project so I know what’s where, so adding comments in via the labels won’t work for me.
For some reason though, I had thought this was already addressed, but maybe not?
It’s like any other component. You can right click the Comment component and choose hide then it will not be exported, otherwise it will be there when export, preview or publish