If somewhere in the North is lucky enough to host it, then I hope their area will benefit as much as our part of East London did from 2012 onwards.
To mention just a few:
Our hospital's A & E was enlarged, so the spacious department was a godsend to the community going forward.
We gained investment in housing, leisure, and cultural venues. Hotels, restaurants, parks etc.
My DD used the new cycle paths to travel to and from work.
My DGC, who were at local schools, enjoyed trips in the regenerated area.
(And I earned a bob or two offering accommodation for some camera crew).
Certainly no gimmicks, but functional, practical spaces created.