Don't understand the amount of people asking "what's next?" when the ARE hasn't even been approved yet, and when it has been long established:
1) Behind Kenny stand is a row of privately owned houses = absolutely no room for expansion.
2) Kop backs onto a major road - even getting approval to disrupt that for months/years would be difficult never mind having it closed off or re-routed completely
3) City/council have spoken of 60k-ish being the maximum in terms of public access to and from the stadium on match-day.
Given those 3 facts there is less than 0.1% chance of any major work on the Kenny or Kop in the next 20+ years IMO.
Just to play devil's advocate to yours and Sons posts;
1) I haven't counted the houses that would need to be repossessed to mirror the Main Stand, it'd be at least a road and a half. But let's say it is 100, and at 100K each. That's 10m. There's talk the club already owns some of them. That's not an outrageous about of money in modern football.
2) The plans for the high street, approved by the council, have already sought to reduce the flow of traffic via the WBR. None of the planned new buildings around the WBR, the 'new high street' as it was branded have appeared yet, nor has the hotel. There must be significant traffic and transport management plans for the the area in the offing. I don't think downgrading or even re-routing the WBR is too wild. If it is part of an integrated plan to revive the area, who know.
In the interests of balance, you do have the new houses there, and as stated the club shop (and the Albert). Especially the new houses pose a problem in terms of PR and it'd be a carappy thing to do to people who have bought them.
3) I haven't seen that 60k ish figure since the Moores and Parry days, in fact I think someone on here said they'd seen something that suggested 65-70k would be manageable with the current transport/traffic infrastructure. While i don't think that is true myself, IF there is a significant transport infrastructure upgrade, a couple of stations/trams/road widening/park and ride/better organised buses, then surely the conversation changes.
I don't necessarily buy the above, but the Deloitte report into the value/economics the club brings into the City, provide leverage for the club when dealing with the council, and politicians. If the club are going to entertain safe standing in any part of the ground, then there surely needs to be the infrastructure.
I don't think the conversation on any of the above will begin until the ARE is finished. But I think it will be sooner than 20 years.