Hi, I installed Office 365 last month, and wish I hadn't bothered and just kept going to my old Laptop for Excel 2013.
Two major things missing, IMO, are creating and editing UserForms, and Evaluate Formula - both of which are missing. How many other functionalities are missing??
My Mac is a MacBook Pro 2012, with the most RAM possible and the latest OS updates. Excel is a bit sluggish, but not much.
There are differences in operation, such as when swapping Tabs/Workbooks while writing a formula does something funky with the mouse as it is waiting for you to select a cell. Just different, that's all.
Using the keyboard to navigate is rather clunky, too, such as having the Command button so close to the space bar. Maybe there is a larger keyboard I could get for the MacBook, though.
Some of the keyboard shortcuts don't seem consistent, as the Control key is not a replacement for the Ctrl key in the Windows Excel. Now I have to remember how and when to use three keys instead of one - then swap between work and home!
The experience hasn't been comfortable, to say the least.
Having said that, I do love my MacBook.