Always felt that all you had to do for X-Sector to modernise it was turn into a Blade Runner/Cyberpunk look with LED screens plastered on say the Smiler station building (which honestly would make a hell of a difference improving the look from a concrete Soviet tower block) and some neon look all round and a new soundtrack which wouldn't be major to do so though Oblivion's theme would bee an update, more likely looking like her Italian cousin.
I have thought that they are waiting for the licence to expire so that they can kill two birds with one stone or three birds if you include the Dungeons building. Would all make perfect sense to do it in one go providing Merlin are willing to splash that cash out.
LED screens look horrible and some spotty teenagers would eventually kick them in because let's be honest Merlin would miss the mark and plaster them everywhere over the weird Brutalist Birmingham Council Block architecture that X Sector has.