It is possible, but as always with UI layout changes it requires knowing the memory/executable addresses to modify, and in some cases custom code may need to be injected into the game. On my mod ESUI, I did document the address modifications I did so you can extract the mod to find some of these addresses, I do not know all the addresses required to achieve this though so some effort is required to pull it off. The bit I am unsure off is if the game background can be visible behind the menu, the game very likely does not keep the field rendered, when the menu is on screen, the frame rate is changed as an example when the menu is drawn.