Since my family tree has more than 40 generations. I would like to see a feature where all 40 generations could be seen and printable. Since the current feature allows only 7 generation of descendants at a time.

You can do that with My Heritage Family tree

also you can use The Complete Genealogy Reporter

just have to import your GEDCOM to them
Related Link:Click Here

WOW Impressive!! Yes, I agree that would be nice to have extended print outs.