Improving the catering would be a great step. The gulf between WT+ and Club catering is huge. (unless you're between First and Club with the kitchen there I guess )

Last WT+ flight I did LHR-MEX was better than SYD-SIN I did last year, although also flew VS premium to BGI a few weeks ago and the catering was way better than WT+. Old VS seat though, felt much the same as the BA ones.