I don’t think we should bother Sam with Discourse issues, I’d rather he spend his time creating the stuff we all enjoy.
Instead, if there are real problems that you’d like fixed (some we don’t really want fixed, we just enjoy bitching about them), you can try contacting @scossar, he is one of our members that work for Discourse and he said:
My first question would be: where’s the documentation?
For example I saw people formatting text with strikethrough but that is not in the editor menu.
I eventually figured it out, you bracket the text with two tildas ~~, but it is not documented anywhere that I could find.