The area in front of Bally's has completely changed since I was there 3+ years ago. It used to be an open promenade. Now it is filled with boutique sized shops off all kinds. Personally, I think they should have left the area open. There are more than enough shops all along The Strip.
The Bellagio has also completely changed the Conservatory/Botanical Gardens. But, the flowers are still there. They have simply changed the theme for the gardens. https://www.bellagio.com/en/entertainment/conservatory-botanical-garden.html.
My biggest disappointment in my first two trips to The Strip is that the musician buskers seem to have disappeared. My first trip, as far as buskers go, was a complete dud. This trip would have been the same, but I found a busker on the crossover (Flamingo Avenue) going from The Bellagio to Ceasars Palace. Maybe I'm just there at the wrong times for them, but the non-musician buskers I saw appear to be no more than "no talent" street urchins that have pulled discarded costumes out of the dumpsters behind the casinos.
On my next trip to The Strip I hope to get my first closeup view of the (https://www.caesars.com/linq) The Linq.