So true!!!! I can barely survive 60 now...
I Agree big 4 audit to strategy consulting pre-MBA is unlikely. But it's very easy post-MBA.
Big 4 TS/TAS/Deals to strategy consulting is very doable. Two Seniors in my firm went to Delotte Consulting S&O, which is on-par or better than Strategy& or ATK.
My friend, with decent execution in application, you can most definitely get into Kellogg or Booth. Living in Chicago, I know K/B folks with pure audit background and nothing more. It is not that hard when you are already working in the US.
四大部门其实有两类。一类是战略咨询和投行。这种比较难进。另一类,无论审计还是什么所谓advisory的,都是或多或少的compliance / shit job。所以不觉得你转practice会给你加太多的分。反而early promotion,leadership opportunity, "audit innovation (aka we want to charge you more but can't think of anything else)" 都是可以炫耀一下的东西。看你的故事是什么了。你要是转一个align到你的career goal。那也是有帮助你的故事的。这只是MBA。