They've been working on installing enforcement cameras at Buckland and Brockham automatic half-barrier crossings. Don't know about any measures at the foot crossings, but a number of them on that stretch of railway have fewer than 1 user per day, on average... so the increase in risk must be relatively low.
Certainly Dowdes and Church footpath crossings at Buckland are barely ever used (Church is accessed via a horrid lumpy field and Dowdes is on an indirect footpath which is plagued with annoying cattle).
The Bullsdown crossings have a few more users, but one was actually closed anyway for some time, as the steps were falling apart. I don't think many people complained about the closure, so you never know, a closure might be on the cards...
Betchworth LC has proved to be a bit of a hotspot for misuse lately. Not sure what might happen to improve it. However, it's a fully barriered crossing, so doesn't quite have the same risks as Buckland and Brockham.
Gomshall barrow crossing has obviously been replaced with a bridge.
There are a few more besides, but I've not heard of any works happening.