Matter of definition..
Your "frequent" tasks are not someone else's frequent tasks.
There are two major issues:
- invested skills in using an existing UI are lost, and retraining is required. That is a HUGE loss of productivity, that is not offset at all by any alleged gain in productivity. Try as I might, the new UI simply gets in the way even more than Clippy ever managed before I killed it permanently.
- all the automation stuff like properties and variables are now buried several menus deep, so anyone using some of the more extended Word functionality has to mine the required functions - if they haven't bastardised them in the process.
Now they've cut the last escape route (the Mac version) I expect a wholesale migration to Open/LibreOffice (iWorks is conceptually too different, more DTP focused).
If MS really wants to rescue itself it should throw out everyone in marketing (and by that I mean boot them out from at least 20 floors up), zap at least 5 layers of management and actually start using teh people they hired to deny the competition their intelligence. And then maybe, just maybe, the Titanic that it is would stop taking on water. Because it is sinking, slowly but surely. It's just so big you don't notice it too clearly yet.