I'm mainly a North American train guy, but occasionally the stars allign, and I want to drive a tight schedule commuter out of London. This pretty much accomplishes that.
-The route is VERY nice looking. Its very green, and vegetation is lush and pops. Cities and towns feel very realistic, both in scale and depth. This is a really fun route to drive just for the scenery alone, which I promise will never be boring.
-The High-Speed portion is really fun, honestly. You'd think from watching a video that the fact you're in a tunnel would make it boring, but the entire time you will be looking at your speed, and making sure you're going just fast enough, but slow down fast enough to not be speeding at the next change. Just take me from my word, that the High Speed portion is really fun.
-Stations are far enough apart where you feel like you can pick up a lot of speed, but not so far where you're getting bored waiting for the next station to appear on your hud.
-The inclusion of the 375 is nice for variation.
-The 395 and 375 are certainly up to DTG's recent quality standard.
-No 375 Scenarios
-No Eurostar available (yet). come on DTG! My St. Pancras feels so empty without seeing the Eurostar stationed at the platform, and like its the most iconic train that runs on this line, too.
Also, while I'm not counting this as a con, if you're reading the "High Speed" thinking it means the entire route is High Speed and you think it means you'll be able to watch your train whiz by at incredible speeds, this may not be the best route for you. Most the High Speed is undeground, and only lasts from London to Ebbsfleet, which is granted fairly far, but certainly not the whole route. If you want a High Speed route, I reccomend a German route, such as Hamburg-Hannover.
Esseentially the main reason I'd purchase this route, would be because the route itself is very pretty, and its fast enough and the scenary changes enough to the point that you'll never get caught looking at the same sort of boring field or hill or river or whatever for too long. Like I said, I'm primarily a North American freight sort of guy, just because thats what I grew up around, but with my minimal knowledge of modern British rail services I can find myself having a lot of fun on this route.