Your list (especially the most recent additions) could and is my list.
An idea: As roadmap is a buzz word at the moment, could H possibly need a roadmap to be able to say and do to help you through the pain from the ow. Saying you need his help is vague, but could you be specific? Do you know, if H did this and this, then I would be satisfied and feel confident? Once you figure this out (if you haven't already), I would convey that to H, then he would know what you expect/need from him to reach a conclusion.
