I'm trying to keep alive code for 2010 (Windows), 2011(Mac) and 2016(Mac) versions of Excel, so my interest is mainly VBA stuff:
1. Bring back fully functional DIR functions
2. Ungray PlotArea sizes so that changes can be accomplished by VBA and recorded!
3. Use the MacOS path syntax. Preview copy uses "/" and not ":" and other changes.
4. Bring back Dialogs or otherwise improve file handling. It's ridiculous to use Applescript to open files or find paths to folders & files
5. Improve VBA documentation over the existing for 2011 and 2013. Method examples are very helpful and should be included.
6. The VBA editor (I know, I know, is not final) but does not bode well. I hope MS does something useful with that. Needs better tabbing, object browser, help, and multi-module window capability.
7. Most recent "bomb" caused by Applicationworkbookfunction.Percentile(.5).
8. Something has also changed in intepreting the content of variants: val() is now lowercase and often bombs.
I guess the Office 2007 VBA was the last fully functional VBA--It's been all downhill since then.
Jim