The shoe issue is a very serious one and, with respect Jokar, perhaps 'putting up with it' is not always appropriate. The problem may be greater at temporary functions, say in public halls etc.
I once found a large but overcrowded assembly room above a shopping centre where a Muslim religious leader was giving a talk. The room had been emptied of it's contents and 200+ chairs and tables had been placed in the secondary MOE.
The room had been divided into male/female areas (the men watching the speaker 'live' and the women by cctv) by a large suspended drape across the room and obstructed the only MOE for the women's side.
This drape also separated the temporary kitchen which was adjacent to the only MOE, and had deep frying units set up against the drapes!! - luckily it was the cooking fumes which operated the AFD and alerted the Brigade
Then the shoes issue: Approx 1,500 individual shoes in a stack in the entrance of the room. No racks, just a heap. The only MOE was via an escalator (the other being blocked by chairs) so it's unlikely that anyone would want to leave without shoes.
It was a very tricky situation. Politically speaking it wasn't long after 9/11 and in a predominately Asian neighbourhood and the attendees were less than happy at our 'racist' intervention. After about 90mins, all but the shoes issue was resolved. Stewards had been hastily arranged and the meeting continued.
So don't write off the shoe storage problem, as even when in racks, they are inevitably by the final exit, so may seriously slow down the evacuation,