I uninstalled MS Office 2016 and reinstalled Office 2011. I don't need the features of 2016 and much rather have the smaller footprint (1.2GB for 2011 vs. 10 GB for 2016), the faster start times, and less-cluttered interface.
On a lark, I took my MS Office 2003 for Windows install and created separate WINE/Wineskin executables for Word, Excel, PowerPoint, Access, and Publisher. Each weighed in at about 500MB each. And because each was in its own separate WINE config, I had to duplicate my frequently used fonts into each separate WINE config.
That reminded me of one of the criticisms of Office 2016 for Mac and got me thinking that maybe the components of Office 2016 are actually running in some kind of WINE-inspired container. The file size and slow load times are far more consistent with my WINE-packaged Office 2003 than with Office 2011 for Mac.
That (Office 2003 in separate WINE configs) worked surprisingly well. If I ever decided to cancel my Office 365 subscription, I would make do with these.