My good lady wife and I have been inveterate travellers by a direct rail connection to Northern settlements with a cathedral or an abbey amongst other attractions for a full day trip from the Manchester area (York, Durham, Chester, Selby) but have always regretted the lack of a direct service to Lincoln. Are we the only ones who would consider Lincoln to be a place worth visiting?
Lincoln has currently got an absolutely terrible service to all of the places that actually matter. Economically, I would say that Lincoln's most important link is with Sheffield, followed by Nottingham. So something better than an all-stations hourly pacer to connect to the former, continuing express to Manchester, an even larger economy, if it is a little distant, sounds like it could create quite a lot of demand. Improvements on the Nottingham service are also on the way, one hopes. I'm not sure how many people from the Greater Manchester area do go to visit Lincoln, neither I nor any of my friends or family ever went there on any of our days out (York, Chester, Blackpool, Southport, Liverpool, Leeds and Hull were places I was all taken to more than once, except for Hull where we just went for The Deep). I've asked my parents, neither have ever visited Lincoln, nor even knew where it was, really. That doesn't mean that it's not going to get any visitors from the North West of course, but I'd guess that Lincoln would be more up on the deal from such a service.