Here's one of the images presented last night:

No image included for 3 storey or 5 storey.
The architects were able to laugh it off as 'just a concept'. I didn't see anybody else laughing.

I have to admit that for 30 years it has puzzled me why that section of land was not built on. It was my route to primary school so I have had plenty of time to contemplate the site. But even when I was at primary school I had to conclude that nothing had been built there because it would have been too intrusive to residents of the other blocks.

Having said that, the architects have proved that it is possible to build on the site without facing windows being too close. So it is quite possible that a 3-4 storey building on the site would be perfectly reasonable. If they were to establish that 7 storey would not be in any way intrusive, then you might as well take it to 15 storey, but why stop there?