Expression curve script

[dartfnm]

I would like to have more freedom for coding, and I think it would be interesting feature to implement.

How about some simple script (like LUA or C# realtime compiled).
It might be used like custom curve operator:
= sin( time ) * 10
Or something more complex :
= input[0] * sin( PI * 0.5 * time) * ( i == 0 ? input[1] : 0)

Where 'PI' and 'time' are variables from global scope,
'input' it's array of float types of operator.

You can find similar script implementations in 3dsMax ( Expression Controller ), Adobe AfterEffects, Enigma4 by Brain Control.