I decided to post some of my thoughts about that option, as many people are talking about this as well.
All games are nicely displayed as a tiles in "My games & apps". All sorted and nice looking. One day I installed one of the demo games (Dead Rising 3) and after playing it a while (2 x 20 minutes) I simply uninstalled that game from my console. Now there is a surprise for almost everyone, that game is visible on the right hand side of your screen in that freshly created grey field under the "Ready to install" menu.
Why a demo game has to be there from now all the time and waiting for me to install it again? After I checked that demo I would like to buy now a full game and what is the point to display that demo over there? I understand that good idea for full paid games as you want them to have in your purchase history forever and get easy access for them, but I can not understand this for demos. I am sure that most of the people will have the same opinion as mine. And by the way that "Ready to install" menu should be in some other place, for example in the first row in settings somewhere between "Payment & billing" and "Subscriptions", but definitely not in "My games & apps" in the way how it is displayed right now.
I hope my post will somehow highlight that annoying thing to the engineers.
PS. Sorry for any possible mistakes in my post, but English is not my native language ;)