So why did I buy an addon?
Because I finally had a route that I knew would give me some playability just tinkering about. Although I downloaded the Port Road when it first became available through Steam, I didn't touch it until recently. What a marvellous route. Lovely detail, a nice combination of double track and single line running, from decent sized stations to single track halts. Most of all, for the first time, I've been able to create some rudimentary scenarios with a bit of traffic, courtesy of good signalling and portals everywhere. As I was playing around with it, I was thinking to myself, "I need a vintage DMU in BR Green to run around this 1960s route". So I hummed and harred over the cost of the Class 101, but decided to go for it. I'm glad I did - I'll be able to use it on Port Road, Newcastle - York, and the FGW route. My only real criticism of it is that the cabview excludes all the dials and controls! You only need to angle down slightly to get most of them in view, but RW doesn't remember your viewpoint - as soon as you use another view then jump back to the cab, you're looking out at the default angle again, not where you last left it.
So although the Port Road was free on Steam (and I gather has been available here for some time), it's netted an extra £15 of sales for RW that I would never have previously dreamed of spending.
But what I really want is proper AI, dispatching, routing logic, and signalling. To me this is even more important than environmental upgrades such as superelevation or graphical enhancements or bizarre point-scoring systems. I don't want to drive around effectively on my own with moveable bits of train-shaped scenery going past on completely separate tracks, I want to feel part of a railway network where I interact with other trains, where what I do affects them, and what they do affects me.
As it is I'll carry on enjoying my Class 101s and finding good uses for them in south west Scotland. But give me the AI and signal/dispatching logic, and I'll gladly purchase more route and stock addons if I can do the kind of stuff I want...