I can't see them adding masks outside - there's no practical benefit.
But I can see them cutting meeting people outdoors, and groups of teens being able to meet. Both of those would be horrible for us, but make sense for reducing transmission opportunities.
@WouldBeGood can't see gyms opening for a while, and to be fair from how the posh gym I joined for a short while operated, I can see how they would increase transmission as there seemed to be loads of people in the pool and cafe areas.
Unfortunately the numbers are horrendous at the minute primarily due to the extra spready nature of the new virus, rather than anything people are actually doing.
Interestingly I met a friend yesterday I hadn't seen for a while. In the summer she was full on following all the rules and making me wipe down the toilet after I'd been inside. But now she's much more relaxed and is convinced the DCs are going back to school on 18th January, whereas I'm a lot more concerned than I used to be because of the super high numbers and the implications for schooling and any semblance of normal life in 2021.
I'm sure some psychologist could do a whizzy study about the changing reactions to the coronavirus pandemic over time.