Emuz has recently given moderating permissions for Devs such as you mentioned but edit/delete don't seem to be there. I think the only way to get that is to give that permission or have you on the moderation list.
I might make a one step for all permission to do that and still keep the others. So if you want one perm to allow all thread/post moderation you have it and you also have the individual ones.
Oh and possibly extend and make moderators who moderate a forum to give admins more flexible control over what they can do in a forum. (Checkboxes if they can see moderating options, editing options, etc)
Back to my favorite layout!