Looks like heaven for young agile cats.
I have one floor to ceiling cat tree, one floor to almost ceiling cat tree, and other smaller simpler cat stands around the house.
All my cats (two aged 11, two aged 6, all four are chubby) seemed content just to lounge around no higher than the counter top.
"Well, now that I think about it... yes... I guess I AM... *yawn* King of the World."