I'm easy as to whether to stay or go. If we did move, I'd be scared at the thought of a souless bowl. I love the quirkiness of Hillsborough.
If we are staying, I'd do a general offer for all of Vere Road plus the Herries Road triangle.
I'd start on the North. Knock down the shop. Put in a four storey building in which allows a third concourse. Remove all the current vendors and make them additional toilets. All concourses widened. Have lots more food/drink places in the building itself as separare rooms off the concourses. Top floor would have a row of exec boxes plus a proper TV studio and autism room. Rest of the building I'd have the shop and maybe a museum/archive. I'd also move some of the offices from the South to the North. I'd also put extra entrances/exits (possibly through the VereRoad houses (a la Luton). This could allow away fans into the North and have Owls behind both goals. I'd also do some passive provision for a second tier on the North in the future.
Next I'd move to the South. Not much would need doing - basically fill in the gap created by the moved offices. More facilities.
Onto the Kop - a South stand style bridge over the top so the pillars could get removed. I'd go past where it is currently needed to allow a new corner stand to be built when needed. Then build upwards over the perimeter to create a huge indoor space to allow more space for facilities. I'd keep the hill - to me, that's what makes it a Kop.
I don't think I'd do the Lepp until the other three are sorted. I'd knock down and start again. This would be a home stand though.
In the Herries Road triangle, a huge fan park and a hotel.
If I were the new owners, I would want fans to think that it was perfectly plausible to be in Hillsborough from 12 to 8 for a 3 o'clock kick off which is obviously not happening at the minute.