I want to create Mathematica wishlist. It helps to developers of Mathematica to understand what users urgently need in Mathematica for the feature releases. It's necessary to write about only one wish at time. Each of us can vote for wish it like. So the wish with a maximum quantity of votes became 1st in a list.

As a novice in using Mathematica I start this wishlist with my 1st wish -
I don`t understand how to work with system without good (convenient) opportunities of input and output. And so first of all I urgently need InputTable like InputField (with DynamicSetting wrapper and calculation in place by Shift-Cntrl-Enter).