With Cathcart Circle route getting upgraded, I think it would be nice to some more routes coming out of Glasgow Central to Ayrshire, or to Gourock/Wemyss Bay or even Kilmarnock. This would make use of the class 380, to Barrhead for the last one as it’s only electrified to their on that route. The class 385 sometimes runs between Gourock/Wemyss Bay. (Not 100% about the last one).