FWIW, here's a screenshot of my netbook/tablet (Asus EeePC T101MT) in portrait mode as already mentioned by sanktnelson (comment #12). Of the 7 menus of gedit, only the first two are visible.
In view of this, I would prefer a "More" button that is considerably small (not wider than, say, the height of the menu bar; though it still has to provide enough area to be clickable reasonably easily). Also note that in some cases, it might happen that no more than one menu icon (or not even that) can be displayed (in which case a button labeled "More" seems out-of-place).
FWIW, here's a screenshot of my netbook/tablet (Asus EeePC T101MT) in portrait mode as already mentioned by sanktnelson (comment #12). Of the 7 menus of gedit, only the first two are visible.
In view of this, I would prefer a "More" button that is considerably small (not wider than, say, the height of the menu bar; though it still has to provide enough area to be clickable reasonably easily). Also note that in some cases, it might happen that no more than one menu icon (or not even that) can be displayed (in which case a button labeled "More" seems out-of-place).