Cathay isn't going to "bin" Aria as the same way of the old "coffin" seats. Cathay is continuing to send 77A/77Ks to XMN for refit, and there's no sign of that stopping. I think they'll try and address some of the feedback from customers, such as the leg room. CX is still advertising the aria suites, just not as vocal as when it started

Also, I don't think cathay is planning on Aria A350 refit yet? - they still haven't confirmed ultimately what seat they'll use but unless Aria feedback improves drastically for the 77Ws i doubt they'll install it on the 350s.