Just two cents from us - we were approached by SBB as well, but after some discussion, we found a good way to handle existing products with changing „just“ these things:
- Change cruise control dot from purple to yellow
- Make pantograph lever change when master key is turned
- Door release indicator will only blink once when coming on
- Door close indicator will blink 3 times when door state changes
I totally understand that these might be immersion breaking for some, but I think these are acceptable. It might be worth for other devs to seek the discussion with SBB.
Personal note: I think this is mostly because some non-tech (and likely non-players) are trying to be extra safe. I think there’s a chance in talking to them - worth a try at least.