One can't help wondering " what's the point ? "
If aircraft enthusiasts don't see 4 glowing afterburners they're going to feel cheated, and it would be a huge amount of effort by ground & air crew just to roll a bit; and as others have commented, £15,million sounds like the tip of the iceberg.
If the French were holding the Olympics I might see a sort of point; 4 x Olympus etc.
I forget the names, Sir Stanley Hooker & his rival / chum from Bristol engines ( apologies, Gordon Lewis & Ralph Hooper are in the frame but I don't think the name I'm groping for - I'm sure JF could help ! ).
When the Olympus reached the same thrust in pounds as Mount Olympus in feet, he sent a postcard.
The reply was " how does the weight compare ?" .