Not sure what you mean by font size and line through words feature. And let me know if there is any other things that people used and are missing. Can see if I can bring some of them back. If it isn't a feature I used regularly, I'm probably not going to notice, so doesn't hurt to ask and I can take a look.
The sticky header to make navigation and moving around easier is up now. For people with wider monitors, the real estate used by the main navigation panel will now extend to most of the screen.
Some other newer features I've noticed from this upgrade:
For longer running