Like I asked, what is done elsewhere? If it's done better somewhere else ASA needs to know about it.
No traffic advisories are given in Europe. Traffic holding fuel is at the discretion and experience of the commander - and that is all the advice you get!
It was one of the more "interesting" things I had to get used to in Europe. Having said that, the slot system is quite advanced, so holding airborne (for traffic) is pretty rare.