Sad to see it go too. The reign of the department store has sadly ended. I've got lots of wonderful memories of this and similar stores in the 1960/70s/80s, but that doesn't sell stock, neither do/did the pricing of the likes of Rackhams, Selfridges stores etc. To me Rackhams, was usually a one-off special purchase for clothing or gifts. Although I did use the Vidal Sassoon salon for hairdressing for a while. Despite loving to browse in there and to take in the superb window displays, I always shopped around to get a better price.
And now, with Internet shopping and access to cheaper products, no wonder department stores have fallen by the wayside.
Hopefully, sensible use of the available land will address future needs. It'll be interesting to see specifically what planners think those needs are and how they can be addressed by a site of this substantial size and position. Housing is mentioned (500 homes) but to me that doesn't necessarily seem to be the answer, especially if it's in a prime location like this, of high cost and, inevitably, accompanied by high property prices and/or rents etc. Commercial development is also hinted at, but for what ? Isn't there already enough office/business space. As for retail, well, we're back to the same old problem.
Needs some clever, relevant, and forward-thinking planning.