Yeah, Leeds had the Dark Arches and the Corn Exchange and now they're bland identikit shops. Dark Arches used to be my favourite spot in Leeds - it really was dark along there, with just some dim lights far in the distance, and then suddenly you were on an underground bridge looking at the swirling rushing water. There was also a weird carpark among some of the Dark Arches, you went in along a tunnel, through a single arch, then had to weave in and out of pillars and arches in search of a space. But it was cheaper than above ground.
Piece Hall I remember from its days of decline, when there was a dragon/incense/new age/goth shop in one corner, and a few other shops which were usually closed. It needed something doing, but not turning into a twee upmarket tourist trap. And I can see the adjoining Square Chapel has better facilities, but I don't like it as much. (I think I'm getting old)
But they've done one nice thing in Leeds- the S entrance to the railway station, where you're suddenly at the top of an escalator with panoramic views.