IMHO AY could change the front economy cabins on either a few or all the 343's into economy plus configuration. Beijing, Hongkong, Shanghai and Tokyo are destinations where it should be fairly easy to sell that full.

As for the seats, just benchmark alliance partners like BA or JL. Other useful benefits (frequent flyer oriented) would be noice canceling headphones, fast track when it opens at HEL and pre-boarding. I don't think any differentiation regarding meals or drinks needs to be there, biz class is for that.