I would love to see a remake of the S and D route for train sim and extension to Bournemouth, similar to what we have seen with the Portsmouth Direct. This is very much needed as it had poor detail and old assets and an extension to Bournemouth and Burnham would make the route feel much more complete. I think the remake should include an updated 7f and also include the 9f and possibly 4f or Light Pacific.
Quite agree a revamped S&D would be good. However, if you are looking for an updated 9F and a Bulleid Light Pacific, both have been improved by SteamSoundsSupreme including an unrebuilt Bulleid Pacific. Also they have some very good freeware routes.