After giving immersion controls another go, I'm growing to like them. However, I have an issue with pressing B for PZB. When you long press B, it contacts the signaller. Unfortunately the difference between short press and long press seems to be about half a nanosecond. This means that if you press B for too long, the signaller tells you to proceed at restricted speed and then throws the next signal back in front of you. Please can the long B time be increased, to something like 5 seconds? Contacting the signaller should require more effort than it does. At the moment it's all too easy to do. Secondly, and I'm not sure if TrainSim-Matt can confirm if this is expected behaviour, but the signaller will throw the next signal back in your face, as opposed to saying "you have a proceed aspect, what more do you want?"
