It's been left alone for ages, the hs1 portion of southeastern highspeed looks unfinished. For a start hs1 section would be more enjoyable if the fences were lowered so we could see more of the Dagenham area. The rest of hs1 just looks like it's been autogenerated and looks off. Scenery only pops in when closer and the tunnels should have lights. If you could do it in the original TS why can't you now.
Adam and his team will be looking into improving routes once they know what routes they will focus on after the American routes that are currently being worked on with the improvements .Southeastern isnt even 6 months old yet, give them time to get around it and they’ll sort out the issues. Adam will announce what routes are up next for some TLC in future livestreams and also on the Roadmap.