When you access OAS/OAC from a mobile device — not the mobile app, but the web version on mobile, which is a pretty common need — watchlist items are not visible. I understand the newer capabilities to optimize workbooks on different form factors, but this is the OAS/OAC home page that does not display the watchlist. In my case, those watchlist items are perhaps the most critical thing to be able to see from my phone, to get a quick glance on the run about some of the key performance indicators for my organization.
I also find it somewhat odd that only "What's New" appears, as the next most important thing for me to see would be my Favorites.
In short, it would be great if the home experience on mobile was more similar to the experience on a PC.