Dont change the existng
If it aint broke no need to fix it. The current Desktop is plain and simple and super easy to navigate. The new and 'improved' one is so fussy and full of so much detail, its hard to know where to look first. Perhaps offer a choice of either opting for old one or swapping to new if one if preferred. Very basic and simplistic home page will definitely be preferred by the very small or one man band companies that only hop on for a couple of hours a week. The two businesses I do accounts for are tradies who operate better on the tolls rather than a fandangled accounts system.

Hi Kathy, while we appreciate your feedback I want to be open that the new homepage experience will be coming to all organisations in time. As with many tech businesses we need to keep evolving our products for our growing customer base.
We'd really like to hear the changes within the new experience that'd be most useful for you and you may like to join this one, where customers would like to see a simplified layout.