As far as I can see no. There is no Aberdeen to Dundee line that would include it (there is a Just Trains Scottish East Coast Mainline, but this only goes from Edinburgh to Dundee (and Perth), and they’re releasing Perth to Inverness this year. Aberdeen is currently a black spot: no Aberdeen to Inverness either. The other biggie to be done is Inverness to Wick and Thurso.
Yup. Hope you like looking at dead grass and heaps of stone that were once buildings lol! Tbh though, I don't think TS2021 could do the far north line justice - I think it'd probably be better in TSW.
Plenty of tourists do! Both the countryside and urban areas are of interest. Someone used to mountainous Highland scenery could equally down on the relentlessly flat pastures of southern England I like the complexities of urban routes too, but it’s nice to have as complete coverage as possible. I live in Aberdeen now, and no DLC features it at all. When I was a regular user of the train, 99.9% of my journeys were on the Aberdeen-Inverness, and Inverness-Edinburgh lines, but sadly not yet to be experienced on TS, though at least the Perth to Inverness gap will be closed by Just Trains this year.