I am just another User/Patron like yourself ...
From the image you have posted ...
As far as I can 'see', on TOP Section of your 'Home'/'Land' page/screen, you DO (already) have "Announcements" (or, "Campaigns"); as, indicated by that "Image Box" of the "Day 2 of RootsTech Connect Starts Now! [ Join Now ]"; plus, the "Previous" and "Next" links, at the base of that box - which when selected, shows a number of previous "Announcements" (or, "Campaigns").
There are VERY Special "Announcements", that might be MORE Prominent, for VERY "Short" periods of time, such as "RootsTech"; but, these come and go quickly.
Plus, some of the "Announcements" ONLY apply to Users/Patrons who are Members of the Church, which you are; as, you have the, "Temple" 'Tab'; and, the "Help Others" Icon.
As, to the "Memories" UNDER the aforementioned ...
Such "Memories" ONLY appear IF such have been "Added" to your Ancestors by OTHER Users/Patrons; as, such ...
IF, NONE have been "Added"; THEN, NOTHING will be there.
In essence, you are NOT missing out on anything.
I hope this helps.
Thabnk you for your quick answer. Now I know why.