It would be handy to be able to type math expressions into integer/real input editors. For example, if I have a
Make Parametric Points node, it would be handy to be able to type
-2*PI in the Min port, and
2*PI in the Max port.
The expression itself should be stored in the composition (rather than the result of the expression like Quartz Composer does), so you can later see what the expression is, and modify it.