come'on dude!!! that notification was for ICAEW articleship, not ACCA. ICAP has published its clarification as well.
Just to let you know, in Pakistan there are only Big 3 now as M/s Deloitte has been going through issues for more than 1.5 years now which have not yet been resolved and they haven't inducted any trainee since then. They have lost a significant number of clients as well.
If you get articleship in any of the Big 3 firms, just go with it with your eyes closed. Otherwise, you may consider Grand Thornton, BDO etc etc as well.
and please stop considering these future kinda things like scope, future job etc etc. You never know what is written for you. That is just a matter of your fate, your hardwork and the prayers which you get.