I'm pretty sure this would be possible to implement, but correct me if I'm wrong. I think it would be pretty sweet if we could get a TimeDelta expression that isn't affected by the TimeScale. This could be helpful for pause screens with moving elements.
Maybe it doesn't even have to be a separate expression, maybe you could just put TimeDelta(1) and it would deliver a non-TimeScaled value. That could keep people looking through the expressions list from getting confused between the two.
Possible? Yes? No? Chickens?