Is it possible to have input spread sheet and plot (view) in one window together at a time? So that in one frame itself we are able to view both the input and the graphics. Whether same can be achieved for output option also? So that we can see output text results together with graphics at same time.
I feel this will increase the user friendliness.
Is it possible to incorporate same in future versions ?

Yes, at the present time both the Standard Graphics and the 3D HOOPS Graphics (in the Piping Input Module) allow you to view a graphics window and a spreadsheet window. Note that to effectively work in this mode, you need a big monitor and a high resolution. Otherwise there just isn't enough screen real estate to make this mode of operation worthwhile.

To see what this looks like, go into the graphics, and then click on the toolbar button that looks like two overlapped sheets of paper. This button is usually the far right button (unless you have moved it).

This capability will be added to the output modules in a future update.

Another option is to have two monitors. I had this setup once and it worked very well.