Probably I do not see/find it: but did you drop the preview option for posts? I see a preview-button at the comment form, but none here, where I do the post itself.
And i think the button(s) (save for community / preview) should be right under the text box not forcing users to scroll beyond the option boxes below every single time. Normally I would expect the preset is fine and I don't want change anything. Although I see the problem having it above the boxes, then noone will be aware, they are there ... hmmmh, why not put them in a column on the right side of this text area here?