/Applications/Opera.app/Contents/Versions/15.0.1147.132/Opera Framework.framework/Resources/opera.pakにデフォルト設定のJSONが入っていたので、これを参考にProfileディレクトリのPreferencesを書き換えれば色々できそう。
nストロークキーをマッピングできるかどうかは不明。
あとActionの連結ができればこれはもう最強伝説だね！
まあどうせまたLinux版は1年以上放置されそうだけど……。
"Keybindings": {"Settings": {"AdvancedEnabled": false}, "Basic": {"AccessKeyToggle": ["Esc+Shift"], "AddBlankTab": ["Ctrl+T","Command+T"], "AddToBookmarks": ["Command+Shift+D","Command+D"], "Back": ["Command+Left"], "Bookmarks": ["Command+Shift+B", "Command+B"], "CloseActiveTab": ["Command+W", "Ctrl+F4"], "ClosePrivateWindow": ["Ctrl+Shift+Q"], "CloseWindow": ["Command+Shift+W"], "Copy": ["Command+C"], "Cut": ["Command+X"], "CycleBackwardInActivationList": ["Ctrl+F2"], "CycleForwardInActivationList": ["Ctrl+F1"], "Delete": ["Del"], "DevTools": ["Command+Alt+I"], "DevToolsConsole": ["Command+Alt+J"], "DevToolsInspect": ["Command+Alt+C"], "EditProperties" : ["Command+i"], "ErrorConsole": ["Command+Shift+O"], "Exit": ["Command+Q"], "Extension": ["Command+Shift+E"], "Find": ["Command+F"], "FindInline": ["OemPeriod","OemComma"], "FindNext": ["Command+G"], "FindPrevious": ["Command+Shift+G"], "FitToWidth" : ["F11+Ctrl"], "FocusAddressbar" : ["Command+L","Command+E","Ctrl+F5"], "FocusNextWidget": ["Tab"], "FocusPage" : ["Ctrl+F6"], "ForceReload": ["Shift+F5","Command+Alt+R"], "Forward": ["Shift+Backspace","Alt+Right","Command+Right"], "GoToEnd": ["End","Ctrl+End"], "GoToPage" : ["F2"], "GoToSpeedDial_1" : ["Command+1"], "GoToSpeedDial_2" : ["Command+2"], "GoToSpeedDial_3" : ["Command+3"], "GoToSpeedDial_4" : ["Command+4"], "GoToSpeedDial_5" : ["Command+5"], "GoToSpeedDial_6" : ["Command+6"], "GoToSpeedDial_7" : ["Command+7"], "GoToSpeedDial_8" : ["Command+8"], "GoToSpeedDial_9" : ["Command+9"], "GoToTop": ["Home","Ctrl+Home"], "HideOpera": ["Command+H"], "History": ["Command+Shift+H", "Command+Alt+2"], "Homepage" : ["Space+Meta", "Command+Home"], "NavigateDown": ["Down"], "NavigateLeft": ["Left"], "NavigateRight": ["Right"], "NavigateUp": ["Up"], "NavStop": ["Esc"], "OpenDocument" : ["Command+O"], "OpenLinkInBackground": ["Command+Shift+Enter"], "OpenLinkInNewPage": ["Command+Enter"], "OpenMenu" : ["Command+M"], "OpenPrivateWindow": ["Command+Shift+N"], "OpenWindow": ["Command+N"], "PageDown" : ["PageDown","Space"], "PageLeft" : ["Command+PageUp"], "PageRight" : ["Command+PageDown"], "PageUp" : ["PageUp"], "ParentDirectory": ["Command+Backspace"], "Paste": ["Command+V","Meta+Y"], "PasteAndGo": ["Command+Shift+V"], "PastePassword": ["Command+Alt+Enter"], "Preferences": ["Command+OemComma"], "Print" : ["Command+P"], "PrintPreview": ["Command+Shift+P"], "QuickPreferences": ["Alt+F12"], "Redo": ["Command+Y","Command+Shift+Z"], "Reload": ["F5","Command+R"], "ReloadFrame": ["Alt+F5"], "ReopenLastClosedTab": ["Command+Shift+T"], "ResetZoom" :["Mul", "Command+0", "Command+Num0"], "Save" : ["Command+S"], "SelectAll": ["Command+A"], "SelectPreviouslyActiveTab": ["Ctrl+Grave"], "SelectTabToTheRight": ["Ctrl+Tab"], "SelectTabToTheLeft": ["Ctrl+Shift+Tab"], "ShowContextMenu": ["Command+Shift+M"], "ShowHelp" : ["Command+Shift+OemSlash"], "SwitchToNextPage": ["Command+Shift+Right"], "SwitchToPreviousPage": ["Command+Shift+Left"], "ToggleFullscreen": ["Command+Shift+F"], "ToggleKeyboardSelection" : ["F7"], "ToggleOverstrike": ["Ins"], "Transfers": ["Command+J"], "Undo": ["Command+Z"], "ValidateSource": ["Command+Shift+U"], "ViewSource": ["Command+U", "Command+Alt+U"], "ZoomIn" : ["Command+OemPlus", "Command+Shift+OemPlus", "Shift+OemPlus", "Command+Plus", "Plus", "OemPlus"], "ZoomOut" : ["Command+OemMinus", "Command+Minus", "Minus", "OemMinus"]}, "Advanced": {"Back": ["Z"], "FastForward": ["Shift+X"], "Find": ["OemSlash"], "FocusNextFrame": ["3"], "FocusPreviousFrame": ["Shift+3"], "Forward": ["X"], "LoadAllImages" : ["I"], "ResetZoom": ["6", "Num6"], "Rewind": ["Shift+Z"], "SelectNextElement" : ["D"], "SelectNextHeading" : ["S"], "SelectNextLink" : ["A"], "SelectPrevElement" : ["E"], "SelectPrevHeading" : ["W"], "SelectPrevLink" : ["Q"], "ShowAddressDropdown" : ["H"], "ShowImagesToggle": ["Shift+I"], "ZoomIn": ["0", "Num0"], "ZoomInMore": ["8"], "ZoomOut": ["9", "Num9"], "ZoomOutMore": ["7"]}}