100+ hour-weeks are horrific and not sustainable for any prolonged period of time. April & May last year, I was working 100-105 hours a week for about a month or so (just the way things worked out, unavoidable unfortunately) sleeping 3-4 hours a night most nights and it burned me out massively, took a solid 2/3 weeks to actually recover from it.madness. how can it be sustainable?! (i guess the answer is that it's not)
My perception is that IB is probably 7-10 years behind law in terms of modernising at any given period - in terms of culture, diversity, transparency in recruiting, etc - this is only based on my very minimal understanding of IB, though, so I could well be barking up the wrong tree!