In this scenario, Scotland is still almost entirely Gaelic speaking in 1707. By that I mean that different varieties of the goidelic language family are the mother tongue of the peasantry, merchant classes and the language of literature. It is also the language of the state and aristocracy where French and Latin aren't used. English has the status of a regional language in East Lothian as does Norn in the Northern Isles.
Would Gaelic be safe or would it suffer a similar decline to Irish in Ireland in OTL?
How would a Gaelic Scotland affect the Union politically?
Would Scottish independence happen? If so, when?
Would a Gaelic Scotland prevent the decline of Irish in Ireland?