Emperor’s Palace has never been shy about scale, but the launch of the Jade Room (billed as “the Macau of Africa”) indicates a more deliberate positioning than anything the Kempton Park entertainment complex has attempted before. The evening began, fittingly, at Molecule Cocktails Lounge & Bar on the edge of the main casino floor, where guests gathered over welcome drinks and Asian-inspired canapés. The canapés were well-executed and thoughtfull…