I would like to have the option to purchase rolling stock without having to purchase a route. Of course, at a correspondingly lower price! Because of DtG's use of layering, in order to enjoy lively and reasonably realistic traffic at the larger stations I have to purchase a significant number of expensive routes that I have absolutely no interest in, just to have AI traffic on the one route I like. I'm especially not interested in long-distance routes, but the rolling stock attached to these routes is simply necessary to replicate AI traffic on many local routes, which in turn bring me a lot of fun. For example, I would like to have the option to purchase Class 378 separately so that I can see them passing by on an adjacent track at the Suffragette Line's end stop in Gospel Oak. The incopomplete Midmay Line recreated in TSW doesn't interest me very much (also because to have a reasonable AI traffic there I'd have to buy a lot of routes that don't interest me at all). I've made one exception for the Cathcart Circle Line, but I'm not ready to spend that much money again to complete AI traffic on the next potentially interesting routes. I'd be even happier if there was an option to buy a much cheaper and reduced version of the rolling stock exclusively for AI traffic. Let's be honest, why do I need a realistically rendered cab and working screens on rolling stock I will never drive?
Third this. I would like to see the 153 reskinned and put on sale separately so it could be dropped into WCL and maybe MML without having to buy the Cardiff route.
100% Think they have missed an opportunity here. I believe it would be better to purchase a loco or rolling stock with multiple liveries. These can then layer onto any regional route using the correct livery. Where licenses are missing, do the same as WCMLS and have a 90% accuracy without the logo. It would also allow 3rd party developers to do loco only packs. That would then make future routes easier to produce as the rolling stock may already be available (scotrail 158 for example, and we'd already have the Scotrail HST at this point), making layering and busier routes much quicker in development.
If only they did locos separate from routes at the start. They could have easily added every possible livery for that loco (licensing permitting unless some are unbranded). Would've saved them a lot of time reskinning a loco into a different livery if they'd already made it years prior - all they'd have needed to do was the sounds and physics then.