Putting threats in the take off brief adds to SA as long as the threats being briefed are relevant. I'm starting to get a little irked at hearing examples of threats such as as
- crossing an active runway (sure if the vis was poor but CAVOK?),
- 'a bit of weather on departure' when the cloud is SCT 040, or
- it's late and we're a bit tired.
However I do think that stopping and considering as a crew the possible things that can bite us on the backside on this departure/arrival is probably not a bad practise to do- and something that I saw practised regularly well before the advent of TEM into the formal CRM programme. In that respect, formalising it was probably 'stating the obvious' to most crews but we all know that many SOPs aren't written for 'most crew'. I'm a big fan of 'I haven't noticed any threats, you got any? No? Excellent' and that's it.